Specialists distinguish 2 periods in the intrauterine development of the fetus:
• Embryonic. It lasts the first 8 weeks. Accordingly, at the 2nd week of pregnancy we are talking about an embryo. He is still quite small and does not look like a mature person;
• Fetal. It starts from 9 weeks of pregnancy and continues until the very birth. At this time, the fetus acquires characteristic features and every day becomes like a little man.
The development of the embryo depends on the genetic material that the future mother and father laid in it. In addition, the first trimester of pregnancy is the most responsible, since the woman's condition and her lifestyle directly affect further development.