I have had this problem and I am prone to ovarian cysts. They are harmless and pretty much go away on their own. I can usually tell when I have one because I get sharp pains in my interior women bits during ovulation. When I first got one I ended up in the ER with all the docs convinced I had appendicitis. They did a CT and realized cysts were the issue. Sent me home with some pain meds and the stupid thing was resolved a week later. They can be pretty painful though. Hang in there!!