OP here, I made an account just to respond. To explain, my girlfriend is very rarely on top, and she was in the kind of pain wanting 'mood' that she didn't notice the contact and I certainly wasn't aware of it. I already knew that she said this could happen and avoided it at all costs. Well, turns out the angle and her weight pushing down caused us to reach the limit and well... I was on the bottom. Simple as that. I in no way did this on purpose. She knows it too.