What happens in the first few days of pregnancy?

After pregnancy, sperm implantation triggers a series of changes in the female body, progesterone increases, estrogen decreases, and these symptoms can show up two weeks after menstruation is delayed, wanting to sleep, not wanting to eat, wanting to vomit, and no mental performance. This is the performance of early pregnancy, generally in pregnancy after three months will gradually disappear, pregnant women found pregnant should be timely folic acid supplementation, it can effectively prevent fetal malformations. Pregnant women should relax, do not be too nervous, peace of mind to raise the fetus.