think it happens more frequently than you think. Just this month I had 2 myself. I know I wasnt pregnant, and I was just in to the OB for a check up and all was well. It freaked me out a bit as well. I never had that before. Usually I skip if anything. Also this second one I had was far more painful than I am used too. Excessive bloating, and cramping. Highly emotional and very sensitive. Think it was just my month. Sometimes our body, especially when we start getting older, gets thrown off. I am sure it was telling me, hey hurry up and use you remaining eggs lady!!! I think as long as that doesnt happen again next month, and everything goes back to normal. Not to worry. If your having any lasting pain, localized pain, or pain during intercourse. By all means get on in to the doc.