I know this is an old post but I am pretty certain of a possiblity....perhaps you have an ovary cyst. I say this from experience. This has happened to me twice (2 separate occassions) in which painful intercourse was due to ovary cysts. The dr. ruled out infections, STD's, bladder issues etc.

By the way, ovary cysts are common and treatable. The treatment is to let it heal naturally and/or start a birth control method.....usually the pill. Syntetic hormones that stop your ovaries from "working" stop them from also developing cysts.

Note - if you do have a cyst, you should be diagnosed by a professional and talk about treatment options. Some cysts are very large. My first cyst had burst and I was bleeding heavy, dark almost black blood. It was disgusting. I'm okay now though. Best of luck to you or any woman reading this!