Painful periods. Pelvic pain and cramping may start before a menstrual period and last for days into it. You also may have lower back and stomach pain. Another name for painful periods is dysmenorrhea.
Pain with sex. Pain during or after sex is common with endometriosis.
Pain with bowel movements or urination. You're most likely to have these symptoms before or during a menstrual period.
Excessive bleeding. Sometimes, you may have heavy menstrual periods or bleeding between periods.
Infertility. For some people, endometriosis is first found during tests for infertility treatment.
Other symptoms. You may have fatigue, diarrhea, constipation, bloating or nausea. These symptoms are more common before or during menstrual periods.