Tummy pain after the first sex is mostly related to sexual stimulation and gynecological inflammation: 1. When having sex, it will cause some stimulation to women’s vagina and abdominal cavity, especially after women reach orgasm, the pelvic cavity is engorged with blood and the uterus is also strongly contracted, all of which will cause some discomfort in the abdomen. However, the stomach pain caused by this condition is usually transient, and the symptoms will gradually reduce and disappear after rest. 2. If a woman has gynecological inflammation such as pelvic inflammatory disease, endometritis, or adnexitis, she will feel obvious pain after strong contraction of the uterus under the stimulation of sexual intercourse. In addition, the male partner’s action is too violent or because the penis penetration is too deep, impact to the part with lesions can also cause abdominal pain, and there may even be a small amount of bleeding. Therefore, if the symptoms of stomach pain after sex can not be relieved, it is mostly considered to be related to gynecological inflammation. It is recommended to seek medical examination and treatment in time, usually after the inflammation improves, the symptoms of stomach pain will gradually disappear. In addition, if a woman has sharp abdominal pain after sex, accompanied by nausea, vomiting and other symptoms, must be alert to the situation of rupture of the corpus luteum, if it happens need to seek medical attention!