1 Rectal pain. 2  Pain during bowel movements. 3  Infertility may be the only sign that you have endometriosis. 4  Between 20% and 40% of women who are infertile have endometriosis. 5  Abnormal bleeding. 6  This can include: 7  Blood in the urine or stool. 8  Some vaginal bleeding before the start of the menstrual period.ther women have symptoms that range from mild to severe. Symptoms may include: 1  Pain, which can be: 2  Pelvic pain. 3  Severe menstrual cramps. 4  Low backache 1 or 2 days before the start of the menstrual period (or earlier). 5  Pain during sexual intercourse. 6  Rectal pain.