Great aunt refers to menstruation. The discomfort in the abdomen after intercourse just after menstruation may be caused by uterine contraction spasm, or pelvic inflammatory disease, or endometriosis, with different causes and different treatment methods. 1. Uterine contraction spasm: the uterus will contract during menstruation to promote the discharge of menstrual blood, the end of menstruation just after coitus may lead to uterine contraction spasm, which makes the patient to appear the symptoms of abdominal discomfort, generally should be avoided just after the end of menstruation coitus. 2. Pelvic inflammatory disease: the end of menstruation on coitus may suffer from pelvic inflammatory disease, the disease can also lead to patients with symptoms of abdominal discomfort, treatment should be avoided coitus, semi-recumbent rest, but also in the doctor’s guidance, the use of ceftriaxone, metronidazole, and other drugs for anti-infective treatment. 3. endometriosis: in the menstrual period or menstruation just after the end of coitus, may lead to patients suffering from endometriosis, the disease can also lead to patients with symptoms of abdominal discomfort, the treatment can be used ibuprofen, indomethacin and other drugs for pain, but also the use of deoxypregnene ethinyl estradiol tablets, methylhydroxyprogesterone, mifepristone and other drugs for treatment. In addition to the above reasons, other factors can also lead to the symptoms of abdominal discomfort after intercourse just after menstruation, it is recommended to consult a doctor in a timely manner in order to avoid delays in the condition.