Pregnant charts of basal temperature examples. bt schedule during pregnancy

The article describes what a low basal body temperature is. How do you know if this is normal or if you should see a specialist? Examples of pregnant and non-pregnant schedules with low BBT in the first and second phases are given. Is it really that the basal temperature below 37 is bad?.. Interesting? Then keep reading.

What does low basal temperature mean in the first and second phases of the cycle?

If, say, the basal temperature is below 37 in the second phase of the cycle, this does not mean at all a lack of progesterone and a potential problem with bearing. What matters is not the absolute indicator - 37 °, but the relative one. What is the average temperature difference between the two phases.

Example(!) If the average before ovulation is 36.4°, after it is 36.8°, the difference is 0.4°. This means that everything is in order with the hormonal background and there are no problems. If the values are: 36.6° and 36.8°, a difference of 0.2° indicates a hormonal disorder. In the second case, we can talk about low BT in the second phase.

In the first phase, there is no low basal body temperature. And each woman has her own individual indicator, but not higher than 37 °.

Reasons for low basal temperature in the second phase

Lack of progesterone. It is determined by passing the analysis in the phase of the corpus luteum (7 days after ovulation);
. Defined by .
Incorrect BT measurements (change of thermometer, place of measurement, time, illness in phase I, etc.);
Other gynecological or endocrine diseases.

Note(!) Consultation with a specialist and examinations are required only when the situation with reduced BBT in phase II is repeated for several cycles in a row. Single, non-repeating failures on the chart are possible and do not pose any threat to potential gestation.

Pregnancy charts with low basal body temperature

Let me remind you that you can talk about low BT if the graphs were conducted for three or more cycles and the average temperature of the follicular phase is known exactly. And the difference between the two phases is 2.5° or less.

Normal pregnancy is possible with rates up to 37° and a relative difference of 3° or more. This is not considered a problem, but simply a feature of the body.

Important (!) If a short-term drop in BBT is possible with a confirmed pregnancy. Do not panic and immediately start taking progesterone-containing drugs. They are appointed only by a specialist. Watch yourself and make the right decision!

Even 15 years ago, the measurement of BBT was considered one of the main diagnostic methods for assessing women's reproductive health. After all, the basal temperature of a non-pregnant woman is fundamentally different from the BT of a girl "in position". A "healthy" temperature graph is not at all the same as that of a girl with problems "in the female part."

Now this method has given way to other, more modern and accurate diagnostic methods. Gynecologists prefer to prescribe ultrasound and hormone tests to patients. However, the BT method can still tell a lot both to the girl herself and to her doctor.

How to measure BBT

unsuccessful attempts to conceive a child over a long period of time;
suspicion of hormonal imbalance and changes in the menstrual cycle;
probable infertility of one of the partners;
calculation using the schedule of the most favorable days for conception, when ovulation occurs (the release of an egg ready for fertilization from a mature follicle);
control over the processes occurring in the body of a woman;
diagnosis of anovulatory cycles.

BBT is measured in the morning, after a good night's rest (when healthy sleep lasted at least 6-7 hours), in a state of complete rest and without getting out of bed. As a rule, the most accurate results can be obtained by measuring the basal temperature with a conventional mercury thermometer in the rectal passage, but experts also do not deny the information content of measurements obtained by measuring indicators in the oral cavity or vagina.

Based on the results of which a special schedule is drawn up. A competent assessment of the basal temperature chart can only be given by a qualified specialist. However, the girl herself can understand a lot.

Cycle phases on the chart

The normal monthly cycle of a woman who is not pregnant consists of two main periods: the follicular and luteal phases. In the first phase of the cycle, which begins with the onset of menstruation, estrogen hormones are actively synthesized in the woman's body, which positively affect the maturation of the egg and the proliferation of the endothelium of the uterus. This period is characterized by consistently low BBT values on the charts, therefore it is called hypothermic.

Approximately in the middle monthly cycle an egg matures in the follicle. Her exit from the ovary or ovulation is accompanied by a change hormonal background women, after which progesterone, the main hormone of pregnancy, normally begins to be produced. This biologically active substance, affecting the centers of thermoregulation in the brain, provokes an increase in temperature indicators by about 0.4-0.6 degrees. If fertilization does not occur, progesterone levels begin to decline, menstruation begins, and the body again enters the follicular phase of the cycle.

Temperature norm

The basal temperature in the absence of pregnancy has its own characteristics, which are clearly visible on correctly drawn up charts of the period without conception. The norm is when in the first phase the temperature ranges from 36.3 to 36.6, and in the second it rises by about 0.4-0.6 and is already 36.9-37.1 degrees and above.

So, what should be the basal temperature in non-pregnant women? The non-pregnant basal temperature chart is characterized by the following features:

decrease in BT with the onset of menstruation to the level of 36.3-36.5;
stable level of basal temperature throughout the follicular phase;
rise in BBT indicators about two weeks before the expected menstruation;
the presence of ovulation retraction or a decrease in the level of basal temperature by 0.1 before the release of the sexual gamete from the ovary;
increase in indicators during ovulation to 36.9-37.1;
the temperature difference between the two phases should not exceed 0.4-0.5;
a decrease in the temperature level to 36.7-36.8 one or two days before the onset of menstruation.

Naturally, the graph of basal temperature in the absence of pregnancy differs in many ways from the curves obtained as a result of measuring BBT in women who are already carrying a baby.

The main feature of the graphs without pregnancy is a decrease in the temperature level in the last few days of the cycle, that is, a decrease in progesterone activity. In addition, the basal temperature, if there is no pregnancy (unlike the indicators of women expecting a baby), has a two-level view, sinking in the middle of the cycle and a gradual rise in the temperature curve in its second period.

Non-pregnant woman chart

Schedule during pregnancy

Deviations from the norm

Every woman normally has monthly cycles about twice a year without the release of a mature egg, which are called anovulatory. On such charts, the line is constantly at the same level, without sinking and sharp rises. Anovulatory cycles are characterized by the following features:

the absence of a drop in basal temperature in the middle of the cycle on the charts. The situation when is a confirmation of the absence of ovulation;
in the second phase, no increase in temperature is recorded, since a pregnancy that synthesizes progesterone is not formed.

Graphs of basal temperature will allow you to suspect some diseases of the female genital area. Temperature jumps above 37.0 in the first phase of the cycle indicate the development of an inflammatory process in the ovaries or uterus. And with a lack of hormones, its relative increase in the first period of the cycle and a decrease in the second will be recorded.

However, it is important to remember that any deviations from the norm on the chart are just an excuse to contact a specialist. In itself, temperature measurement is only an auxiliary, and not the main method of diagnosis. Perhaps your fears are completely unfounded. Much more reliable laboratory tests, ultrasound and other studies that your doctor will prescribe.

After the completed conception, the female body immediately begins to undergo some changes that occur according to a certain plan. Thanks to clear physiological rules, it is possible to predict possible fertilization even before the delay of menstruation, and also to check whether your pregnancy is proceeding normally. This can be done using the usual measurement of basal temperature (BT). Its level is significantly affected by a sharp surge and a decrease in the concentration of sex hormones. Let's look at the principles of measurement and the rules for deciphering the obtained basal temperature standards from the moment of planning to the end of gestation.

Basal body temperature is called, measured in conditions of complete rest immediately after waking up. Its level changes cyclically during the menstrual cycle under the influence of two main hormones - estradiol and progesterone.

In gynecology, the BT schedule is considered an indicator women's health. The study of several graphs can determine whether a woman has a normal hormonal background, whether there are inflammatory pathologies, whether ovulation is normal and whether it exists at all.

At the planning stage, BT allows you to "catch" ovulation without special expensive tests or diagnostic ultrasound. But the effectiveness of the technique is observed with regular measurement of BT with adherence to the prescribed rules for the procedure.

The principle of determining BT is based on temperature fluctuations, based on the phases of the female cycle. As you know, the cycle consists of two phases, and ovulation serves as the equator between them. The essence of observations comes down to the daily entry of temperature indicators into a simple graph. In the first half, the temperature is low, and in the second, under the influence of progesterone, higher.

Ovulation is characterized by a sharp drop in temperature - the temperature drops, and on the second day it rises rapidly. And with the approach of menstruation, it begins to decrease again. If fertilization has occurred, the graph will display a consistently elevated basal temperature during pregnancy, before the delay it will exceed 37⁰С. In the absence of fertilization, BBT before menstruation will drop to 36.7⁰С or even lower.

In obstetric practice, BT scheduling is used if:

Absence of pregnancy for more than 12 months without obvious reasons.
It is necessary to establish the correspondence of hormone production with respect to the phases of the menstrual cycle.
Clarification of the present pathology of the hormonal background of a woman is required.
Need to calculate auspicious days for conception, when it is not possible to constantly live a sexual life.
There is a suspicion of a latent course of endometritis.
It is necessary to establish the fact of fertilization before the delay due to the possible threat of interruption against the background of alarming symptoms ( brown discharge, lower abdominal pain).

Important! If there is no temperature jump in the ovulatory period, and the difference between the average BT of the two phases is less than 0.4⁰С, then the woman has hormonal pathologies and ovulation does not occur.

How to measure basal temperature to determine pregnancy

Accurate BBT is obtained by rectal insertion of a thermometer into the anal lumen. Manipulation should be carried out daily at the same time. Which thermometer to use is your personal decision, the main thing is to do it according to the rules.

How to measure basal temperature during pregnancy:

BBT should be monitored in the morning. At the same time, it is forbidden to sit down abruptly, leave the bed. The sleep preceding the measurement should be more than 6 hours. Frequent awakening at night will make the morning temperature uninformative.
In the daytime, BT changes a lot. This is influenced by activity, feelings, fatigue. Therefore, BBT is measured in the morning, while the body is still “sleeping”. And it is pointless to check the basal temperature during pregnancy in the evening, since the result will be unreliable.
The duration of the procedure is 5-6 minutes. In the case of using an electronic thermometer, you need to keep it for another 3-4 minutes after the beep.
It is better to start recording the temperature from the first cyclical day, otherwise it will be impossible to assess the ratio of indicators between the phases. If the measurement is carried out in order to diagnose the hormonal background, it will take at least three months to draw competent conclusions.
All received figures should be noted on a special chart.

Important! The schedule of basal temperature during pregnancy will be uninformative if it was compiled during an acute illness, or against the background of stress, alcohol abuse, hormonal pills, frequent flights and trips. Also, BBT indicators will be false if they are obtained less than 6 hours after intercourse.

Norms of basal temperature during pregnancy

The whole cycle is based on a certain BT dynamics. To understand whether pregnancy has occurred, you need to navigate in the usual indicators before conception and after it:

The follicular phase lasts approximately 11-14 days, but this is only a guide, because every woman has a different cycle. To navigate the phases, count two weeks from the last day of the cycle and get the approximate date of ovulation. Under the condition of a normal state of health, BT in the first half ranges from 36.1 to 36.8⁰ C.
The moment of ovulation is the climax: the egg is released from the proovulated follicle, which is accompanied by a sharp production of hormones. The graph shows a jump in BT to 37.0 -37.7⁰С.
Then comes the luteal phase, which lasts until the onset of menstruation. At this stage, the temperature remains high, and only a few days before menstruation begins to decrease by 0.3-0.5⁰С. If such a decrease does not occur, there is a high probability that fertilization has occurred.

Advice! The level of BBT during gestation is very individual and in some women pregnancy proceeds well even at 36.9⁰С. For this reason, there are no clear indicators of what the basal temperature should be during pregnancy. Therefore, the only diagnostic criterion is the absence of a decrease in BBT after ovulation.

In order for a fertilized egg to be able to fully implant into the endometrium and develop further, the body creates special conditions for this. To do this, he begins to produce progesterone in large quantities. This hormone provokes a persistently high BBT, which remains elevated until a certain period.

Depending on the characteristics of the hormonal system in different women, the basal temperature during pregnancy is early dates equal to 37.0-37.4⁰С. Such values indicate that the pregnancy is developing well and there is no threat of miscarriage. In individual cases, BT can even rise to 38⁰С, which is also considered normal.

Pathological basal temperature after conception: causes of deviations

The basal temperature during gestation does not always correspond to the prescribed norms. There are exceptions, because the female body is different for everyone. In some cases, there is no reason to worry, and minor deviations are considered a variant of the norm. Unfortunately, the predominant number of cases of pathological fluctuations in BT is caused by various complications during pregnancy.

Basal temperature with a threat of miscarriage

Instead of an ovulating follicle, a corpus luteum appears. It produces a huge amount of progesterone, which ensures the safety of the fetus. If a woman had hormonal problems even before conception, the resulting corpus luteum may not function correctly. As a result, progesterone deficiency develops, which causes the risk of termination of pregnancy.

On the BBT chart, such a pathology is very difficult to miss: the temperature is kept at a too low level below the 37⁰С line. Therefore, if the basal temperature is 36.9 during pregnancy, it is necessary to determine and eliminate the cause of this condition.

A very high level of BT can also indicate a possible termination of pregnancy. Thus, a temperature of 38⁰С is often caused by an inflammatory process in the uterine cavity, which can provoke egg rejection. A one-time rise is rarely a threat to the fetus, but if such an indicator holds positions for more than three days, you need to see a gynecologist.

Basal temperature during a frozen pregnancy

When the embryo stops developing, the corpus luteum begins to regress and progesterone production stops. As a result, BT gradually drops to the level of 36.4-36.9⁰С. By the way, low temperature does not necessarily indicate the fading of the fetus. There is a high probability of measurement errors or the aforementioned condition of progesterone deficiency. Therefore, do not rush to self-diagnose yourself before visiting the doctor.

Advice! It happens that anembryony (embryo freezing) has occurred, and the temperature is consistently high, so it is not necessary to focus only on BT indicators. With uncharacteristic pains, pathological discharge, poor health, you should immediately visit a gynecologist.

Basal temperature during ectopic pregnancy

A fetal egg implanted in the fallopian tube does not block the work of the corpus luteum. For this reason, progesterone is fully produced and the BT schedule looks quite normal. That is why judging ectopic pregnancy only by the numbers of basal temperature is simply impossible.

However, as the embryo grows, an inflammatory process develops in the fallopian tube, which provokes an increase in BT. On the graph, the temperature can rise even above 38⁰С. But at this stage, other symptoms also indicate the presence of ectopic implantation - acute abdominal pain, fever, vomiting, loss of consciousness, and sometimes internal bleeding.

How to correctly compose and decipher a BT schedule: a detailed guide

A chart for maintaining basal temperature is easy to draw on a piece of paper or can be printed ready template.

The graph shows several values at once:

Menstrual cycle by day (from 1 to 35 days, depending on the length of your cycle).
Daily temperature readings.
Special notes (poisoning, stress, insomnia, SARS, etc.)

For the BT record, the table is marked up as follows:

A checkered sheet is divided into two axes: the X axis is the day of the cycle, the Y axis is the BT indicator.
An indicator is indicated daily, all points are connected by a line.
A solid line is drawn through the six upper indicators in the first phase, with the exception of the days of menstruation, then the line continues until the end of the second cycle.
On the day of the expected ovulation, a vertical line is drawn.

To understand what a temperature chart might look like, see how the basal temperature fluctuates during pregnancy in the photo:

The figure clearly shows ovulation, an increase in BBT in the second phase. On the 21st day of the cycle, a jump in temperature is noticeable as a result of the implantation of a fertilized egg, and from the 28th-29th day the third phase begins - the gestational one. Pregnancy can also occur at a low basal temperature. Even if the BBT does not rise above 36.8⁰С, and the delay has been present for several days, you need to go to the doctor.

This photo shows a graph with full-fledged cycle phases inherent in a healthy woman outside of pregnancy. In the first phase, BT confidently stays below 37⁰С, after ovulation it begins to grow and remains at this level for 11-14 days, and three days before menstruation, it begins to return to its original values.

The next type of BBT schedule is anovulatory. The follicle does not grow, does not ovulate, and the egg, accordingly, has nowhere to come from. Throughout the cycle, it can be seen that BT randomly “jumps” without a regular change in values and an ovulatory jump. In appearance, the graph resembles a monotonous straight line, the points of which range from 36.4⁰С to 36.9⁰С. Such a schedule is quite possible once or twice a year and is considered the norm. But if such a picture appears regularly, the woman definitely has gynecological or endocrine problems.

It is possible to determine the deficiency of estrogen according to the schedule. For this reason, in the first phase, there is a pathological increase in BBT up to 37.4⁰С. In the follicular phase, a large amount of estrogens should be produced, which suppress BBT to a level below 36.5⁰С. The lack of estrogen also causes a high temperature in the second cycle (above 37.5 ° C), which is in no way associated with ovulation and conception.

It is not entirely correct to judge the state of women's health or the onset of pregnancy according to the BT schedule, because there is a risk of false indicators if the rules for measuring temperature are not followed. Yes, and the influence of all external factors also cannot be completely ruled out. Therefore, plotting serves as an additional diagnostic tool.

Now you know how to measure basal temperature to determine pregnancy, so you definitely won’t have any difficulties. Accurately measure BBT, keep a schedule and then you will definitely guess about your pregnancy even before the delay.

Video "Top 5 Rules for Accurate Basal Temperature Measurement"

Women who measure their basal temperature can not only determine the time of ovulation in their cycle without tests, but also guess before others that the conception has taken place. And the BT schedule will help them in this, which in the “pregnant” cycle is strikingly different from other schedules. What should be the basal temperature during pregnancy in the earliest stages before the delay, this article will tell.

BT - what is it and how to measure it?

The basal temperature, according to the definition existing in medicine, is the lowest temperature of the human body, which can be fixed only at the time of rest. When we are active and mobile, the internal temperature of our body always rises. And in women, the level of basic temperature still depends not only on activity, but also on the day of the cycle, because on different days the cyclical work of the female body is determined by completely different hormones.

It has long been observed that during the period of ovulation in women, there is a jump in basal temperature. This is the basis of the symptothermal method of fertility recognition, which allows women to see exactly when they release a mature egg from the follicle, which means the highest probability of conception.

Ovulation Calculator

Cycle duration

duration of menstruation

Menstruation
Ovulation
High chance of conception

Enter the first day of your last menstrual period

Ovulation occurs 14 days before the start of the menstrual cycle (with a 28-day cycle - on the 14th day). Deviation from the mean value is frequent, so the calculation is approximate.

Also, along with the calendar method, you can measure basal temperature, examine cervical mucus, use special tests or mini-microscopes, take tests for FSH, LH, estrogen and progesterone.

You can definitely set the day of ovulation through folliculometry (ultrasound).

Sources:

Losos, Jonathan B.; Raven, Peter H.; Johnson, George B.; Singer, Susan R. Biology. New York: McGraw-Hill. pp. 1207-1209.
Campbell N. A., Reece J. B., Urry L. A. e. a. Biology. 9th ed. - Benjamin Cummings, 2011. - p. 1263
Tkachenko B. I., Brin V. B., Zakharov Yu. M., Nedospasov V. O., Pyatin V. F. Human Physiology. Compendium / Ed. B. I. TKACHENKO. - M.: GEOTAR-Media, 2009. - 496 p.
https://en.wikipedia.org/wiki/Ovulation

In the first half of a woman's cycle, estrogen and FSH "rule" in her body. The action of these hormones leads to the maturation of the follicle. And a surge of LH the day before ovulation, followed by a decrease in estrogen, leads to a characteristic jump in core temperature. After ovulation, a corpus luteum is formed at the site of the follicle, producing progesterone. And under the influence of this hormone, the basal temperature rises and remains so for almost the entire second half of the cycle.

If pregnancy does not occur, the corpus luteum dies 10-12 days after its formation, the concentration of progesterone decreases, the basal temperature decreases and menstruation begins. If conception did occur, then after the successful implantation of the embryo into the uterine wall, the production of the hCG hormone begins, which prevents the corpus luteum from ceasing to exist and function, progesterone remains high, and the basal temperature does not decrease.

That is why the method of measuring BT is considered informative not only for determining ovulation, but also for the earliest diagnosis of pregnancy, as well as various gynecological pathologies and endocrine disorders.

To determine pregnancy according to the basal temperature chart, it is very important to take the measurement correctly. Any mistakes in this process will lead to incorrect readings of the true temperature, the woman will be misled. Therefore, when planning conception, it is necessary to learn important rules to help you get accurate data. Let's define these rules.

It is impossible to measure basal temperature under the arm. Be sure to fix it in those parts of the body that are in close proximity to the cavities, communicate with them. This is the mouth, vagina, rectum. Having chosen one part of the body, always take measurements only in it, do not change the location of the thermometer.

Choose a good thermometer that works properly. Mercury is better, since mercury devices are more accurate than electronic ones. For measurements in the oral cavity, a special thermometer is required. In the rectum and vagina, you can use the most common thermometer.

You need to measure BBT in the morning at the same time every day. It is always higher in the evening and during the day because we are active. And in the morning after waking up for some time, the body still adapts to wakefulness and provides the thermometer with the most accurate readings of the temperature of internal organs.

Do not move, do not get out of bed. When you wake up, immediately start measuring, lying down at rest. In the evening, put the thermometer at arm's length, shake it off in advance.

Thermometer injected by 2-3 centimeters for 5-7 minutes.

The best time to measure is the period from 5 to 7 am, but consider the personal daily routine, because before measuring, a woman should spend at least 6 hours in a dream without getting up anywhere.

The increase in temperature can be affected by severe stress, a cold or viral disease, any inflammation, fatigue, travel, sexual intercourse that took place the night before, alcohol drunk the day before. Under such circumstances, BBT inevitably rises, so a woman may misinterpret her schedule at the end of the cycle.

The temperature is entered into the schedule, the measurements do not stop even during the next menstruation. You can download the graph on the Internet or draw it yourself - this is not so important.

"Pregnancy schedule" - what does it look like?

Of course, the BT schedule will only suggest possible pregnancy, but will not be able to accurately answer the question of whether conception took place or not. Although sometimes women planning a pregnancy are very happy with such a hint. Take a close look at the cycle chart. To talk about the likelihood of pregnancy, it is important to see the day of ovulation on it to be sure that the release of the egg, as a prerequisite for conception, has taken place.

Most often, this day falls in the middle of the cycle, before it there is a decrease in temperature, and then immediately its rise. This "peak" visually divides your cycle into two phases and looks like a bird's beak with outstretched wings. Before the "beak", the temperature was in the range of 36.2-36.9 degrees, on the day of ovulation - above 37 degrees.

The second half of the cycle is elevated temperature, but this is not a sign of pregnancy, but just a sure sign of the action of progesterone. It is produced in all women, regardless of whether conception has occurred or not. During the first week after ovulation, on average, your temperature during and without pregnancy will be 0.4-0.6 degrees higher than in the first phase.

7-9 days after ovulation, the implantation of the embryo occurs, if there was a conception. The physiological and biological meaning of what is happening is the attachment of the fetal egg to the inner layer of the uterus - the endometrium. On the day of implantation, a fairly common curious phenomenon is often observed - an implantation drop in basal temperature. It may drop slightly and rise again the next day. But such a reduction is not at all necessary. It depends on the personal level of progesterone in the woman's blood.

If the implantation was successful, under the influence of hCG, the corpus luteum does not regress, but continues to regularly supply the female body with shock doses of progesterone, so the basal temperature remains high. There will be no decrease in 2-3 days before menstruation, which is observed by non-pregnant women in the regression phase of the corpus luteum, in a pregnant woman - all days before the delay in menstruation, BT will remain elevated (above 37 degrees).

It is this sign that should tell an attentive woman that an “interesting situation” is very likely.

Other chart options - reasons

If in the second half of your cycle, thermometry shows an increase in BBT to 38 degrees and above, do not rush to rejoice, because. it does not say, alas, about pregnancy. This means that a woman has a serious and severe inflammatory process in her body, and therefore you need to see a doctor as soon as possible for an examination. Most often, this temperature accompanies gynecological problems of an inflammatory and infectious nature.

Therefore, pay attention to the discharge, pain. If the discharge is atypical, there is pain, the state of health leaves much to be desired, you need to go to the doctor. A sharp jump in temperature up to 38 degrees 6-8 days after ovulation may indicate an ectopic pregnancy.

Reduced thermometry in the second half of the cycle (36.5 - 36.9 degrees) indicates that the corpus luteum produces an insufficient amount of progesterone. In this case, even a pregnancy that has begun can be suddenly interrupted at any time, since progesterone deficiency threatens a miscarriage or a missed pregnancy at the earliest possible date. In addition, it should be sure to consult your doctor.

In most cases, the situation can be corrected by starting to take progesterone preparations as prescribed by the doctor.

Based on the results of the measurements, the woman could get a graph in which there is an increase in temperature in the second half of the cycle, but very insignificant - by 0.2-0.3 degrees, no more. In this case, it is worth suspecting endocrine disorders, often age-related. After all, after 30 years, the production of sex hormones is significantly reduced. In such cycles, it is difficult to conceive a baby, and if this is possible, then pregnancy is often accompanied by a threat in the very early stages.

A monotonous graph, in which it is sometimes impossible to clearly distinguish between changes in BBT up or down, speaks of an anovulatory cycle. There was no ovulation in it, and therefore you should not expect pregnancy - in the absence of a mature egg, conception is impossible. A chaotic graph with large peaks and recessions, a “royal” swing of the curve indicates that gross errors were made during the measurement, so the graph itself does not reflect reality. And also such schedules are a sign of severe hormonal disorders, most often with them the onset of pregnancy is not possible.

Graph from high temperature in the first half of the cycle does not even require further analysis of the increase or decrease, because it speaks of the initial violation of the hormonal background during the maturation of the follicles. Such schedules do not promise normal ovulation, usually such cycles when the rectal or vaginal temperature after menstruation is above 37 degrees are anovulatory, in which conception is impossible.

Accuracy and margin for error

How accurate BBT charts are is not as easy to answer as it seems. If a woman does everything right, follows all the measurement rules, then the accuracy will be quite high. But this method is not suitable for determining pregnancy as a reliable one.

The most that can be done after the temperature does not decrease on the 11-13th day after ovulation is to wait a few more days and buy a pregnancy test - after a delay, its accuracy is quite high. In addition, a couple of days before the delay in menstruation, you can do a blood test for hCG - during pregnancy, the level of chorionic gonadotropin will already exceed the norm.

Body temperature in the early diagnosis of pregnancy does not play a big role at all. But it has long been noticed that after implantation (in the last week before the delay), pregnant women experience temperature rises up to 37 degrees and above, especially in the afternoon and in the evenings. It seems that it is a cold, but the next morning the body temperature returns to normal.

A great help for those planning a pregnancy are the charts of other women with examples and explanations that ladies share in in social networks and on thematic forums on the Internet. According to reviews BT is not a panacea and a way to diagnose a pregnant condition, but a pleasant and useful hint. The longer a woman practices measurements and builds graphs, the better she begins to understand her body, easily notices an unusual graph, which in the end turns out to be “special”, ending without new page in the women's calendar, and the first page in the calendar future mother.

For more information on measuring basal temperature in early pregnancy, see the following video.

Pregnancy is a period when the expectant mother carefully monitors her health. After all, now she worries not only about herself, but also about the life that originated inside her body.

It is very important not to worry for any reason, because unnecessary excitement will not bring any benefits. There are some methods, such as measuring basal body temperature, that will help you constantly monitor your health.

This technique helps to identify some dangerous symptoms. By reacting in time, the expectant mother will be able to protect her unborn baby. If there is any deviation from the norm, then it is necessary to urgently seek help from a doctor.

What is BT?

Usually it is abbreviated as BT, less often rectal temperature. As the name implies, it is not measured in the standard way - armpits. There are several options for measuring - in the mouth, in the vagina and in the rectum. With its help, ovulation is often tracked when a woman wants to become pregnant.

Usual menstrual cycle more often it shows up to 37 Celsius, but exactly until the moment when ovulation begins - then the temperature rises by 0.4 Celsius. After that, or in 1-2 days, it goes down again. But if this does not happen, then, most likely, pregnancy has occurred.

How much should be during pregnancy? And how long should she stay?

Each organism is individual, but normally - 37.1 - 37.3, exactly the temperature is during ovulation and remains so if pregnancy occurs. It is worth remembering that the borderline norm is 37.0. If there is a deviation of 0.8 degrees in any direction, this is a reason to go to the doctor, or at least you should consult with a physician.

Regarding how long she keeps, the answer is unequivocal - from the beginning of pregnancy and the first few months, while the girl is carrying the fetus.

Why measure BBT?

There are two reasons for this - to monitor the health of the mother and child, as well as to plan pregnancy.

The first reason, as mentioned above, helps to understand whether everything is in order with health. And the second reason helps to calculate ovulation. When a woman wants to have a baby, she needs to determine when ovulation occurs. When there is an increase in BBT, this is a sign that it has come, and now the most likely to become pregnant.

How to measure it during pregnancy?

Be sure to measure should be carried out in the morning, immediately after sleep, when the body is still at rest. Important point- It is desirable that the sleep is full, at least six hours. You can measure it in any way, but rectal is considered the most reliable. Measurement in this way should be carried out for at least three to four minutes.

Oral and vaginal methods of measurement are also suitable, however, the time increases to five minutes. Any will do thermometer - both ordinary mercury and electronic. It is advisable to take measurements every day and mark them in a notebook or a special chart - it is easier to track the dynamics. It is necessary to carry out the procedure every time at the same time, the allowable time difference is thirty minutes.

Some factors, such as illness, stress, travel, consumption of alcohol-containing products, and even certain medications, can affect the accuracy of the result. Also, do not use contraceptives if you measure rectal temperature.

Norm after conception

Each organism is individual. This can be proved by a simple fact - some people have normal (not rectal) temperature - 36.6, others - 37 and even higher. At the same time, two types of people feel excellent and do not get sick.

So when measuring BT - it all depends on the specific organism. However, you should know the generally accepted and most common norms - from 37 to 37.3. The temperature rises, as a special hormone - progesterone, begins to be produced in large quantities. This happens to protect the fetus.

There were cases when a woman had a rectal temperature - 38, but she was not sick and everything was in order with the fetus. Such cases are very rare, usually, if the temperature is already above 37.3 or below 37, it is wiser to contact the doctors.

Definition of pregnancy by basal temperature

Most likely, a woman is pregnant if the following symptoms are observed:

The temperature is elevated three days after the end of ovulation.
If, with a normal two-phase schedule, a girl observes another jump in temperature (this condition is not considered mandatory).
The corpus luteum phase does not stop for 18 days - that is, the temperature is elevated all this time.

Daily fluctuations in BT

As usual, it is necessary to measure the temperature immediately after sleep, at the same time. The fact is that factors such as light physical exercise, food, and even clothes can affect the result. Normally, when exactly on the day (not in the morning), it rises above 37.3 - however, the reasons for such an increase are just the factors described earlier.

Therefore, it makes no sense to measure it during the day or even in the evening - you will not understand whether the fluctuations are caused by the usual load on the body or there is reason to worry. Just imagine, in the early stages in the evening, BBT can rise by 1 degree! Morning results are the most reliable, so note them.

Raise

If there is a situation with an increase in body temperature during pregnancy, inflammatory or infectious processes are most likely to occur. But this is only if the increase was fixed correctly, that is, in the morning. Termination of pregnancy in this case is unlikely, but it cannot be discounted.

Regarding an ectopic pregnancy - it may not necessarily cause an increase rectal temperature. Usually it is within the normal range. If there is a violation of this type of pregnancy, a woman may feel severe pain in the abdomen, even bleeding may occur. In this case, you can not postpone, you should call an ambulance.

The fall

This also happens. Its fall, especially sharp, should alert. This means that there is insufficient production of hormones. This clearly indicates that the body is not able to support the female body during pregnancy.

If, along with a decrease in rectal temperature, you notice symptoms such as pain in the abdomen, bloody discharge, prolonged uterine tone, then consult a doctor and undergo an examination.

A frozen pregnancy usually shows a result below 37, but even in this case, you should not panic, but contact a medical institution.

When and how to measure?

In the morning, without getting out of bed, at rest and with minimal activity. To do this, you need to take a thermometer and place it in the vagina or rectum for two centimeters. Hold the thermometer for three to five minutes.

It is necessary to measure BT every time with the same method, that is, choose one - rectal or place a thermometer in the vagina. The thermometer cannot be changed either, as well as the time of measurement - if you decide to measure at 8.00 in the morning, then continue in the same spirit. Oscillations can be up to thirty minutes in both directions.

In order to carry out the procedure as accurately as possible, here are a few rules that must be followed:

Do the procedure in a horizontal position and nothing else, don’t even turn on your side, especially since you can’t squat.
You need a full sleep - from five hours.
It is advisable not to have sex while you are monitoring temperature changes. Or at least maintain a gap of half a day between the measurement and sexual intercourse.
You can not take drugs - they both lower and increase BBT. It is worse when they increase it - you may have it below the norm, and you will think that it is in order.
Eat breakfast only after the procedure.
Try not to get sick - even a sore throat can distort the performance.

Why is a schedule needed?

If the expectant mother wants to seriously monitor this indicator, then you can’t do without a schedule. Different circumstances can affect rectal temperature, especially in the first months of pregnancy.

Usually, the fluctuations on the chart look like this:

On the day of conception - from 36.4 to 36.7.
The next three or four days there is an increase of 0.1, that is, it can reach 37 degrees.
The next two or three days, the value may remain the same.
On the day of implantation of the ovum into the uterine mucosa, it decreases to 36.5-36.6 degrees.
The next three days there is a gradual increase and is reached from 36.7 to 37.
The next fourteen days the value ranges from 36.7 to 31.1. It is important to monitor whether it has fallen below the value that was during ovulation.

It is important to indicate in the schedule not only numbers, but also possible circumstances that influenced them - illness, stress, medication, etc. The attending physician should be aware of them.

How to correctly compose and decipher a graph: a detailed guide

You can draw it yourself, or find it on the Internet and print it. Include the following in your schedule:

"Pregnant" charts

It is impossible to measure everything with one graph alone, discrepancies are acceptable. It happens to different women different indicators. Here, for example, some do not observe implantation retraction, or there are several of them at once.

It happens that the temperature rises sharply, or, conversely, smoothly. Sometimes it does not rise above 37. All the options described are defined by physicians as the norm.

Is it possible to determine pregnancy with a thermometer without a chart?

You can, for this you need to follow the rules:

In the evening, shake the thermometer and put it next to, but not under the pillow. The main thing is that it is convenient for you to get it without using sudden movements;
In the morning, without eating, and without even getting up, use a thermometer. Choose either the rectal method or place the thermometer in the vagina. It must be placed two centimeters;
Wait three to five minutes;
If the indicator is above 37, you are probably pregnant.

But you can’t count on accuracy, an increase can signal an inflammatory process, infection, hormonal failure, or ordinary stress.

Factors affecting performance

To get a reliable result, exclude the following situations:

Taking medication;
Use of contraception (oral or spiral);
Banal lack of sleep;
Consumption of alcoholic beverages;
Sex less than six hours before measurement;
Overwork;
Any illness;
Increased normal temperature.

Is it necessary to control during pregnancy?

It makes sense to do this during the first months. It remains elevated until the twentieth week after conception. Usually, not only gynecologists, but even endocrinologists vote for the control of BT.

With the help of BBT measurement, deviations can be noticed in time and reacted to them. Low rates may signal a threatened miscarriage. Therefore, the answer is unambiguous - it is desirable to control it. However, this is not the only way to diagnose the condition of the expectant mother and her child.

At different stages of pregnancy

Consider the basal temperature at various stages of pregnancy:

Week 3 corresponds to the 1st embryonic week. BT shows from 37 to 37.7 and slightly higher. The mark below indicates deviations and the danger of miscarriage.
N. 4 in the range from 37.1 to 37.3 °, maximum - 38. If higher, then it is possible that this is an infection.
H. 5 is stable from 37.1 to 37.7. If it “jumps”, then pay attention to other signs: drawing pains, hardening of the abdomen, softening of the mammary glands, etc.
N. 6 retains the previous results: from 37.1 to 37.7. If it rises or falls significantly, fetal death is possible.
N. 7-8 from 37.1-37.3 (not lower) and not higher than 38. For non-standard indicators, undergo additional health diagnostics (ultrasound).
N. 9-10 - as during weeks 7-8, but more than 37 and below 38. If this is not the case, consult a doctor.
N. 11 decrease from 37 to 37.2. If it is still high, then consult a gynecologist.
N. 12 from 37 to 37.8, but not higher than 38. Ideal are from 37.6-37.7 °.

The last weeks show from 36.6 to 36.8. At the fortieth week, it rises to 37.4 and can rise immediately before childbirth.

Deviation from the norm

If it deviates from the norm, then it is either ovulation or pregnancy. During pregnancy, the doctor often recommends that you measure it to eliminate the risk. Especially often this method is recommended for those who have previously experienced a miscarriage or problems during gestation.

Why is she too tall?

This may be due to an infection, due to an inflammatory process, or even an ectopic pregnancy. In this case, you need to monitor some other signs: does the stomach hurt, what color is the discharge (normally transparent). If you see them, you need to do an ultrasound.

Possible threat of interruption

This is signaled by a decrease in BT. The decrease is due to a lack of progesterone production. If the result drops below 37, in addition, abdominal pain and brown discharge are felt, you should urgently seek help.

Frozen pregnancy

Unfortunately, in this case, you will have to extract the fetus, it threatens the woman's life. It does not always come out on its own, because of this you will have to seek medical help.

Other signs that signal the fading of the fetus are the absence of toxicosis, the mammary glands no longer increase.

Is there a low BBT during normal pregnancy?

It is difficult to talk about norms - they are always conditional. Not always low temperature prevents the fetus from being born, women give birth to healthy babies and nothing threatens their lives. In addition, there may be such an option - during ovulation, just before conception, the temperature was 36.4, so it is unlikely that it will reach 37 during the next two weeks.

However, if there are such signs - pain or opaque discharge - you should go to the doctor.

Basal temperature of a healthy woman

The norm is not lower than 36.2, but not higher than 37.2. Before ovulation, the temperature drops, while it rises - this determines the most probable moment for conception. After conception, it practically does not decrease.

Signs of probable infertility according to the schedule

This is indicated by the following:

The average of the second phase of the cycle (after the temperature rises) exceeds the average of the first phase by less than 0.4 degrees.
In the second phase of the cycle, the temperature drops change (it is below 37).
The rise in temperature in the middle of the cycle lasts more than three to four days.
The second phase is short (less than eight days).

Schedule for ovulation stimulation

With, especially clomiphene (clostilbegit) and using, in the second phase of the MC, the rectal temperature chart usually becomes “normal”. Two-phase, with a pronounced phase transition, with a fairly high temperature in the second phase, with characteristic “stages” (the temperature rises twice) and a slight depression.

If the schedule during stimulation is violated and deviates from the norm, this may indicate an incorrect selection of the dose of drugs.

An increase in the first phase during stimulation with clomiphene also occurs with individual sensitivity to the drug.

When to contact a gynecologist?

If you are serious about BBT and see a problem for two cycles in a row, see your doctor. However, he should not prescribe drugs only on the basis of the schedule, you should be referred for other types of examinations. Pay attention to such factors:

Novulatory charts.
Constant cycle delays, while pregnancy does not occur.
Late ovulation and you don't get pregnant for a couple of cycles.
Controversial indicators with indistinctly expressed ovulation.
Graphs with high or low temperature throughout the cycle.
If the second phase is short (less than 10 days).
High rates in the second phase of the cycle for more than 18 days, while there are no periods, and pregnancy has not occurred.
Bleeding or heavy discharge in the middle of the cycle.
Profuse discharge during menstruation, which is more than 5 days.
Graphs with a temperature difference in the first and second phases of less than 0.4.
Cycles less than 21 days or more than 35.
Schedules with a well-defined ovulation, regular intercourse during ovulation, but the woman does not become pregnant for several cycles in a row.

BT as a method of contraception

They can be used, because the highest probability that a woman will become pregnant is during ovulation and two days after it. And since this method can calculate a given period, it is able to serve as a method of contraception.

Do you trust this method?

It can be used as an additional method of pregnancy control and planning. However, you cannot rely on it alone, because modern methods diagnostics are more accurate. But as an additional measure, measuring BBT is a great idea.