After intercourse, small stomach pain, want to stool may be caused by the contraction of the uterus to stimulate the anus, intercourse action is too violent, gynecological diseases, etc., as follows: 1, the uterus contraction to stimulate the anus: intercourse, the female vagina, abdominal cavity and pelvic organs produce intense stimulation, causing pain, while the uterus contraction to stimulate the anus, the emergence of bowel movements. This is generally normal and can be relieved after rest. 2, too violent action: during intercourse, the action is too violent, resulting in strong impact on the lower abdomen, causing pelvic organs congestion, edema, and even mucosal damage, triggering symptoms of abdominal pain and anal swelling. Most of them can be relieved after rest. If accompanied by bleeding, it is recommended to consult a doctor promptly; 3. Gynecological diseases: patients with endometritis, cervicitis, vaginitis, pelvic inflammatory disease, etc., semen stimulation after intercourse can lead to mucosal contraction and aggravate physical discomfort. When the above symptoms appear, it is recommended to seek medical attention in time to clarify the cause and treat the cause; 4. Ovarian luteal cyst rupture: If the luteal phase of the menstrual cycle, usually the 20th-28th day of the menstrual cycle, has sexual intercourse, when the volume of the corpus luteum reaches its peak, there is a possibility of ovarian luteal cyst rupture, manifested by sudden onset of lower abdominal pain, nausea, vomiting and frequent urination and defecation. The patient should seek medical attention immediately. If the bleeding is less, rest in bed and apply hemostatic drugs; if the bleeding is more and shock occurs, anti-shock and surgical treatment, such as luteal cyst removal, should be performed at the same time. The abnormal symptoms after intercourse should be promptly sought for medical attention to clarify the cause and treat the cause so as not to delay the condition.