The pain in the abdomen after intercourse is not directly related to intercourse itself, this situation may be due to the following aspects: 1, intercourse without contraception, there is a fertilized egg formation, and to the uterine cavity began to bed, caused by the bed abdominal pain. The symptoms of abdominal pain caused by this cause are generally mild and can be relieved on their own after a few days. 2, abdominal pain caused by pelvic inflammatory disease. Some female patients will have different degrees of abdominal pain, soreness and discomfort at the bottom of the waist as well as various symptoms such as irritability, irritability, constipation and poor sleep about a week before the onset of menstruation, which is a manifestation of premenstrual syndrome.