In obstetrics, there are two “first” weeks of pregnancy. The first obstetric week is counted from the first day of the last menstruation, and the first embryonic week is counted from the moment of fertilization of the egg. Be sure to check with your gynecologist to determine which period is being discussed to avoid any misunderstandings.
The ovum, ready for fertilization, comes out of the ovarian follicle into the fallopian tube – there comes the period of ovulation and waiting for fertilization.
It is the changes in the hormonal background that trigger all the processes of change in the female body. Thus, follicle-stimulating hormone (FSH) on the first day of menses activates the development of the follicle in the ovary. The uterus contracts under the influence of prostaglandin, the production of which increases. But the level of estrogens and gestagens at this time is significantly reduced. As a result, with menstrual bleeding comes out the detached layer of endometrium. Nothing unusual woman in this week does not experience, menstrual short-term pain in the lower abdomen, discharge from the vagina for a period of 3 to 7 days. It is worth paying attention to the following facts:
The first week from conception is crucial for the development of the future child. Therefore, it is very important to adhere to a healthy lifestyle, to observe the regime of labor and rest. In the future, this will ensure a comfortable pregnancy and proper development of the fetus. It is worth listening to a number of recommendations of obstetricians and gynecologists:
At the end of the first week, the level of estrogen increases, giving a start to the growth of new endometrium. This means that in about 10 days it will be ready to receive a fetal egg.