I went to the emergency room the other day with severe pelvic pain. Ultra sound showed a cyst had ruptured. It was a simple cyst, measuring 4cm. My ovary is enlarged and there was free fluid. They also found a corpus leuteum cyst on my left ovary, which is also enlarged and several follicles were present. My endometrium is thicker than it should be at this phase of my cycle. I've had history of cysts, one which ruptured many years ago. My periods are always insanely heavy and painful, horrible cramps and low back pain, and I've found that during the first 3 days of menstruation it is painful to wear a tampon, sort of like an aching/pressure feeling, but I have to wear them AND a pad because my flow is so heavy. Has anyone had experience with this combination of symptoms/findings? I'm done having children, so fertility is not a concern.