Most of the women in the first month of pregnancy do not even know about their interesting situation. The shape and size of the abdomen practically do not change. However, all the metamorphoses on this term are internal, and not external. The development of the embryo goes through several stages. The embryo gradually forms, changing every week. It is impossible to trace it independently, but it is easy to imagine in pictures how the new life is born.
An embryo, an embryo, or a fetus: how does it form
The gestation period is counted from the moment of the last menstruation. In this case, conception and the preceding ovulation occur approximately 14 days later. The first week is marked by the flow of menstruation. In this case, the woman's body is adjusted to its new position. Of the many eggs, only 1 begins to ripen. The mucous surface of the uterus gradually disappears. A new layer forms on the site of the rejected tissues. As such, there is no embryo yet. Even on ultrasound it is not always possible to trace these changes.Development of the fetus: pictures of his early days
Up to 2 months, pregnancy is called embryonic, because the fetus is in a state of embryo. The development of the embryo, which can be traced through the presented pictures and photos, implies a meeting of the ovum and sperm. The result of their connection is a yellow spot, which is very important during the first month.On a note! It is in the yellow spot that estrogen and progesterone are released, which are responsible for preserving the fetus.The functioning of this body is associated with toxicosis. Usually, after all the responsibility for preserving the future child passes to the placenta, all the unpleasant manifestations of the first months of an interesting situation pass. This process is associated with 14-16 weeks.
Photo embryos for weeks: 1 and 2 weeks
Every day of the embryonic period is interesting. After all, the embryo acquires features peculiar to a real child, despite the fact that the stomach, as a rule, looks as before and does not give out a new life arising in it. The first week is associated with the process of fertilization. There is a merger of the female cell with the sperm. As a rule, everything flows in the fallopian tube, in its ampullar department. In the video below you can follow the peculiarities of embryo origin.Note! Only a few hours in 1-7 days is enough for a fertilized female cell to divide at a high speed in a geometric progression, after which it enters the uterus through the fallopian tube.After division, a special organism is formed. Outwardly, it looks something like a blackberry, as you can see on one of the photos. At this stage, the embryo in gynecology is usually called morula. On day 7, it is usually introduced into the uterus. Other cells form the membrane and the umbilical cord. Of the other cells, the internal organs and tissues of the fetus will develop further. The second week of the 1st month of pregnancy is indicated by the dense implantation of the morula into the mucous surface of the uterus. The fetus develops on days 8-14:
- placenta;
- umbilical cord;
- the neural tube.
Photo of children in the abdomen by days: 3 and 4 weeks
Despite the fact that the stomach on the third week of pregnancy looks still, 15-21 days in development are very important. This stage is associated with the formation of rudiments of the nervous, circulatory, respiratory, excretory, digestive systems. In the photo you can see what the future child looks like. A wide plate forms. It is in this place that the fetus will later have a head. Day 21 is the beginning of the development of not only the brain.On a note! At this stage of the first month of pregnancy, the heart begins to beat.
4 week with photo and description
In days 22-28, as can be judged from the photo and video, the fetus is clearly seen on ultrasound. The period is associated with the continuation of the bookmark and the development of organs. There are rudiments:- light;
- liver;
- kidney;
- the spine.