You should not have intercourse until after 3 months of pregnancy. Early pregnancy and late pregnancy generally can not have sex, it is recommended to have sex after 3 months after pregnancy. Early pregnancy embryo planting is still not stable, at this time, intercourse, it is easy to cause contractions. This will result in a miscarriage, or even a miscarriage. In the mid-pregnancy after 3 months to 7 months of pregnancy, the development of the fetus is relatively stable, can be appropriate intercourse. However, we should pay attention to avoid excessive movement, and can take the position that the pregnant woman feels comfortable. During pregnancy, you should pay more attention to rest, do the maternity examination on time, and go to the obstetrics department of the hospital in time if there is irregular vaginal bleeding.