Pregnancy calendar: 1st week of pregnancy
Pregnancy calendar by week. An experienced doctor tells how a child develops in the womb and what changes occur in the pregnant woman’s body. All the most important things about the 1st week of pregnancy.
Pregnancy is an interesting journey! Every week, incredible changes will occur in your body. Your baby will develop and start interacting with you while still in the womb. I will try to be a good friend to you in this journey and help with professional advice.
You should get used to the fact that your obstetrician-gynecologist will count pregnancy from the date of the first day of the last menstrual period . Although the development of the baby, in fact, will begin from the moment the egg is fertilized. Fertilization is possible only after ovulation of the egg (its release from the follicle into the lumen of the fallopian tube). Most often, this happens on the 14th day after the start of menstruation, in women with a 28-day menstrual cycle. This “confusion” arose historically, because it was once technically impossible to determine the moment of ovulation (the moment when the egg is ready to be fertilized). Therefore, the first day of the last menstruation was defined as the most significant event preceding the onset of pregnancy. For example, an obstetrician-gynecologist records that you are 12 weeks pregnant, although your baby is only 10 weeks old.
So, now you will know that the first and second weeks of pregnancy are periods of preparation .
Changes in your body:
You are menstruating, and your ovaries (gonads) are already preparing for a future possible pregnancy.
In the diagram, you can see the process of maturation of follicles – these are vesicles in which eggs mature surrounded by auxiliary cells, which are very necessary for the development of eggs and the production of the necessary female hormones, namely estrogen, and later progesterone.
Author: Olga Letnyanchyk, doctor