Everytime my boyfriend and I begin to have sex, it hurts, but only for a few minutes. But afterwards, like a couple hours or even the next day, I get super bad sharp pains in my vagina, and they last for about a couple minutes. But sometimes they are very painful. I once fell walking up the stairs becuase I got a sudden pain. And everytime we have sex, the pains seems to be worse. What could be the cause of this?