I have painful pelvic pain, my left ovary hurts, and i have had frequent urination for 8 months. what could be the cause of this?

Pelvic pain: I really need more information to give you a meaningful answer. How old are you? Are your periods regular? Do you have pain with intercourse? Etc. Endometreosis is the first thought that comes to mind, but that can be difficult to diagnose. I strongly recommend you see your doctor for a pelvic exam, possibly pelvic ultrasound, and urinalysis.

Endometriosis, cyst: There are many possible reasons a woman may experience pelvic pain when pelvic pain is associated with ovarian pain and urinary symptoms it may be caused by endometriosis a condition in which endometrial tissue implants at various locations in the pelvis including the ovaries, bladder, and bowel other possible causes include ovarian cysts , pelvic infections , urinary tract infections see your md.