Hello, generally speaking, pregnant women had sex effect on the fetus, mainly in the first three months of pregnancy and after three months. Three months ago, easily lead to miscarriage, then three months will often lead to premature delivery, the rest of the time had sex effect on the fetus is not too large. In early pregnancy.

The placenta has not been attached to the growth of the embryo and the uterus is not very strong, sex life can make the pelvic congestion cause uterine contractions, easily induced abortion. Early pregnancy is the most prone to abortion period, it is not appropriate to sexual intercourse. If you can't avoid, also should try to control.

In the first three months of pregnancy and after three months can not, the middle four months, but be careful.