What is the cause of stomachache like dysmenorrhea after running

After running, abdominal pain similar to dysmenorrhea occurs. First, consider whether it is running during menstruation. Severe exercise during menstruation is likely to cause dysmenorrhea. Second, it may be related to gynecological inflammation in women. It is common in cervicitis, appendicitis, etc. Lower abdominal pain, and may also be a manifestation of endometriosis.