The following points should be noted during pregnancy: First, we should pay attention to hygiene when we have intercourse, so as not to cause vaginitis, which can infect the uterus and lead to premature birth of the fetus and other situations. Secondly, we must pay attention to the time, in the first trimester and the last trimester of pregnancy, it is best not to have intercourse, because in the early stages of pregnancy, intercourse, the embryo is still small, very easy to cause miscarriage. The third, when pregnant with intercourse must pay attention to the strength, can not force too hard, otherwise it is easy to trigger a miscarriage. Fourth, when pregnant with the same room should pay attention to the posture, to the comfort of pregnant women, do not press the abdomen of pregnant women. If you have abdominal pain or vaginal bleeding after having intercourse during pregnancy, you should go to the hospital as soon as possible.