From what day do pregnancy count gynecologists?

When a woman finds out about her new position, she has many questions. Of course, she worries about how the baby will develop, whether everything corresponds to the norms. Every future mother is worried about the fact that pregnancy can suddenly be interrupted. However, most babies still come into the world without any problems.

After realizing that soon you will become a mother, you need to visit a gynecologist. From this point on, the doctor will carefully monitor your condition. Many women are interested in the term of pregnancy for gynecologists. It is not always possible to answer this question immediately. Much determines the individual features of conception and women's health. This article will provide you with several cases examined, which describe the day of pregnancy.

Term of pregnancy from the moment of conception

Before you find out from which day pregnancy is considered a doctor, you need to explain the very principle of fertilization. The female body undergoes cyclic changes throughout the entire reproductive age. For a month in the body of the representative of the weaker sex there are many processes. First, the pituitary gland produces the hormone estrogen. Under its action, follicles grow in the ovaries. About the middle of the cycle is determined by the dominant one. It is from this that the egg will subsequently emerge.

Ovulation is the moment when the female gamete reaches the limit of its growth and development (the dominant follicle). This process is started by luteinizing hormone. Subsequently, progesterone, which produces a yellow body, begins to be released. Under its action, the endometrium is built up and the uterus is prepared for pregnancy. Fertilization occurs in the fallopian tubes. Already from there continuously dividing cells enter the cavity of the genital organ, where pregnancy will develop. It would seem that everything is very simple, and the question of what day pregnancy is considered should not arise. However, doctors adhere to a somewhat different point of view and conduct their own calculation of the period. Let's consider some individual cases.

Average female cycle and calculation of gestational age

From what day are the weeks of pregnancy considered, if the duration of the female cycle is 26-29 days? To begin with, it is worth saying that it is the average length of the period that most women have. When they come to see a gynecologist, the doctor begins his calculation. In this case, the starting day is the first day in which bleeding started. Why is this calculation made?

This method of setting the duration of pregnancy is called obstetric. His beginning, he takes on the first day of the last menstruation. However, at that moment, even the female organism did not even know about pregnancy. It is worth noting that the bearing of the baby for the obstetric period lasts 40 weeks or, as indicated in some sources, 280 days. The two weeks that preceded ovulation can be subtracted from this time. In this case, the duration of pregnancy will be 38 weeks.

Short cycle and its features

From what day do pregnant women consider gynecology in women with a short cycle? Experienced physicians always take into account the length of the period. If this is not taken into account, the calculation may not be exactly accurate. The short cycle lasts approximately 21 days, or 3 weeks. If you start counting from the very first day of the last menstruation, it turns out that one week will not be enough. So, often girls with a short cycle do not reach the deadline. Their birth does not occur in 40 weeks, but at 39.

If a gynecologist takes into account the peculiarity that a woman's cycle is short, she can make a correct calculation of the expected date of birth. To do this, you just need to add an additional missing week to the total period of pregnancy. Thus it is possible to draw a conclusion, that the term of pregnancy (obstetrical) takes its origin even before the appearance of the last menstruation (in the previous cycle).

How do expect gynecologists in a long cycle

On what day is the beginning of pregnancy counted , if the length of the female period is more than 30 days? About a long cycle is when the period from one menstruation to another is approximately 35 days. From this we can conclude that this period lasts five weeks. How do doctors calculate in such situations?

In a long cycle, ovulation occurs approximately on day 20 of the cycle. As you already know, from the moment the ovum leaves the ovary before the onset of labor, approximately 38 weeks pass. However, physicians start counting from the first day of the last menstruation. That is why it turns out that the gestation period for women with a long cycle is on average one week longer. It turns out that their natural birth begins not in 40, but in 41 weeks. If the doctor is attentive and has sufficient experience, the calculation in the described situation will be conducted from the 7th day of the cycle. This will lead to the fact that deviations in the expected dates can be avoided.

In Vitro Fertilization: Short Protocol

From what day do you consider pregnancy with IVF? This question arises in all the representatives of the weaker sex who had to use the service of artificial insemination. With this manipulation, the woman takes certain types of hormones on set days. It is worth noting that the short protocol differs little from the usual cycle. In it, a woman within a few days takes drugs that stimulate the growth of follicles. A few days before the proposed ovulation, they are extracted from the ovary cavity. In the usual cycle, fertilization is carried out at this stage. However, the IVF procedure is somewhat different. After receiving eggs, they are combined with spermatozoa. Next few more days for the division of cells observed by experts. Transplantation of embryos occurs on the third or fifth days. It is from this day that we are talking about pregnancy.

From what day do gynecologists consider the onset of pregnancy? With artificial insemination, the period is calculated from the time of egg extraction, but with the addition of two weeks. In a short cycle, you often do not have to manipulate the calculation. Gynecologists say that the first day of the last menstruation is the beginning of pregnancy.

Features of the long protocol for in vitro fertilization

The long protocol of in vitro fertilization has its own peculiarities. So, before carrying out stimulation and growing follicles, a woman should undergo a certain correction.

First, a woman of the sexes takes medications that block the work of the ovaries. And only after a few weeks begins the stimulation. If you carry out the calculation of pregnancy from the first day of the last monthly period, its estimated period will be 7-8 weeks. Then the real picture will show only 3-4 weeks. That is why gynecologists necessarily take into account the day of embryo replanting and it is taken as a reference point.

Special cases

From what day do gynecologists consider the duration of pregnancy in special situations? These include the circumstances in which a woman can not name the date of the last menstruation. This can be with breastfeeding, taking some hormonal drugs and so on.

Physicians say that in such cases it is necessary to conduct an ultrasound. In the early stages of such a diagnosis can accurately determine the number of weeks of pregnancy.

How does this happen in life?

Now you know how gynecologists and obstetricians usually calculate pregnancy. Nowadays, it is increasingly possible to find that doctors do not particularly focus on taking into account the length of menstruation and setting the date for ovulation. Often physicians just add one week to the date of the last bleeding and from here they already calculate their time.

For example, if menstruation started on January 1, then the term will be taken into account only from the 7th day. Doctors explain this calculation by the fact that during menstruation pregnancy could not occur.

Instead of concluding

Now you know from what day the pregnancy counts. After conception about the new situation, you can learn only after two weeks. The pregnancy test will tell you about this. However, it is only a few weeks later, during ultrasonic diagnostics, that it is possible to confirm the occurrence of fertilization. Easy you pregnancy!