This week is the week of transformation in the ovaries. The 3rd week of pregnancy is the most critical week of the entire gestation period because fertilization occurs during this time. In previous weeks, we discussed the father’s sperm cell and the mother’s egg cell in detail. Fertilization takes place as a result of the miraculous encounter between a matured egg cell and a sperm cell. Following this meeting, the chromosomes in the egg and sperm must align perfectly. If there is no perfect match, pregnancy will not occur. The genetic information from the egg cell merges with the genetic information from the sperm cell.
In a 3-week pregnancy, the expectant mother is now pregnant. Following fertilization, the process of conception involves a journey from the fallopian tubes toward the uterus. During this journey, the embryo both advances and divides into cells; this process of division is called a morula. The morula system operates by each dividing cell multiplying by its own kind. In the 3rd week of pregnancy, the appearance of the embryo is exactly like this. Sperm cells always carry XY chromosomes. The presence of these chromosomes means that the father’s sperm cell contains the genetic material that can result in the baby being either female or male.
The egg cell, however, carries only XX chromosomes. This means that the expectant mother has only the potential to produce a female offspring. Therefore, the sex of the baby is determined solely by the father.
An expectant mother who conceives in the 3rd week of pregnancy does not yet know whether she is pregnant or not. This will be discovered through tests conducted at the end of the coming week. The expectant mother waits with curiosity to find out if the anticipated pregnancy has occurred. This wait may feel endless to her. However, the passage of these days, as well as the 9-month pregnancy journey, will go by in the blink of an eye. During this time, with advancing technology, expectant parents will be able to follow the baby’s development in full detail, week by week.
