It is possible to have sex after pregnancy, but it is important to control the timing and intensity of intercourse. Normally, in the first 3 months of pregnancy, the embryo has not yet formed the placenta, so it is not very stable. It is possible that intercourse during this time may cause contractions of the uterus and lead to miscarriage, and it may also lead to vaginal or pelvic inflammatory diseases if proper hygiene is not done. During the second trimester, the uterus and cervix are very sensitive, so intercourse during this time has a high risk of causing uterine contractions and miscarriage, and is also prone to infection. If pelvic infection is caused, it can easily lead to abnormalities such as stillbirth or premature rupture of membranes. Patients can have intercourse between the 4th and 6th month of pregnancy, but during this time, they must pay attention to the intensity of intercourse, not too violent, so as not to stimulate the cervix and cause miscarriage.