You will feel it around 40 days of pregnancy, because the time of symptoms is different for each person’s constitution. 40 days of pregnancy will cause breast pain, dizziness, nausea, vomiting, loss of appetite, etc. Some people do not have any symptoms, as long as the fetus develops normally. In about a week after intercourse, there will be slight abdominal pain and a small amount of bleeding, which may be the symptoms caused by the implantation of the gestational sac are normal early pregnancy reactions, no treatment is needed. By about 3 months of pregnancy early pregnancy reaction can disappear, some people can last the whole pregnancy, it is best to eat more high-protein food, which can promote the development of the fetus.