V dub...hi, sorry about your pain. I can only guess what is causing your pain. I was having lower left abdominal pain, worse right before my period and after having bowel movements. Then I started having pain every day for a year and finally I was diagnosed with endometriosis, adenomyosis and fibroids after a laparoscopy, and then I had a hysterectomy in January. Trouble is, I still have lower left pain, so now they are thinking it's an intestinal problem. I'm waiting now to see a gastroenterologist. A lot of women with fibroids, cysts or endometriosis have the pain you describe. If the pain goes away after your period, I would guess it has to do with a gynecological problem. If the pain persists, it could still be a gyn. problem, but it might be something else, or maybe you're just having regular menstrual cramps before actual blood is coming out? Has this happened before?