Sexual activity causing extreme pain
When I have any sort of sexual activity with my girlfriend, after a short while she'll suddenly collapse in pain. She says it feels like its on fire and it seems that her muscles clench and spasm. This can go on for quite a while, the longest it's happened for was about 40 minutes. Penetration isn't required for this to happen. Neither of us have any idea why it's happening and there's no warning before it happens. Any ideas about what could be causing the problem? What can we do to make it go away?