The following things should be noted when having intercourse during pregnancy: 1. In early pregnancy, that is, the first three months of pregnancy, it is recommended that pregnant women should not have intercourse, because at this time the development of the embryo is still unstable, intercourse may stimulate the reproductive system, resulting in the phenomenon of uterine contraction, which may cause vaginal bleeding, and in serious cases, may also cause miscarriage; 2. 2. It is recommended that pregnant women should not have sex during the late pregnancy, because intercourse at this time is likely to cause premature birth. Pregnant women in the middle of pregnancy can be appropriate intercourse, but must do a good job of hygienic care, after intercourse to wash clean private parts to avoid bacterial infection, resulting in gynecological inflammatory symptoms of pregnant women, which has a certain impact on the development of the fetus; 3, pregnant women can have intercourse without contraceptive measures, but it is best not more than 2 times a week, the time is less than 15 minutes is safer.