When ovulation occurs, the stomach pain has already finished ovulating, because after ovulation, the corpus luteum is formed locally, and there will be a small amount of bleeding inside the corpus luteum, due to individual differences, some people bleed a little more, resulting in higher pressure inside the corpus luteum, so it will cause the phenomenon of stomach pain. It is recommended to give proper rest and not to drink alcohol during the period to avoid aggravating the symptoms of internal bleeding in the corpus luteum, after rest most of the abdominal pain symptoms will slowly ease. The abdominal pain may be aggravated in some cases because the pressure inside the corpus luteum gradually increases, which may lead to rupture of the corpus luteum and therefore cause severe lower abdominal pain, and it is recommended to go to the hospital for examination and treatment in time. Some can be cured by conservative treatment, while others require surgery.