Hi there - I have had low back pain and vaginal spotting x two weeks. I thought it might be kidney stones (I have three small stones in my right kidney and passed a large stone a few months back). I went to urologist, he said not related to kidney stones. He thought I needed an ultrasound - he thought it may be ovarian in nature. I saw my OB today and he did a transvaginal ultrasound and found a 2.5 cm cyst on my left ovary. He said this is probably causing my pain and bleeding. He also did a biopsy of my uterine lining (will get results at end of week - he thinks results should be normal). He prescribed birth control pills for treatment of the cyst. I go back after one cycle on the pill to get another ultrasound. He thinks the cyst should reduce in size or go away. I've never heard of this. Has anyone received the same treatment? I have a maternal aunt who died of ovarian cancer recently. I can't help but be a little anxious.