Lower abdominal pain, back pain, painful intercourse can be symptoms of PID (pelvic inflammatory disease) or sexually transmitted infection that has spread from the cervix and womb to the ovaries and their tubes.
Pelvic pain during ovulation, a sharp pain deep in the pelvis during intercourse, or pain during bowel movements or urination, associated with painful, excessive menstrual bleeding, can indicate presence of another condition known as endometriosis.

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