I don't know what's going on. I just ended an 11 day period and got off my birth control because of it, I'm not having sex with my boyfriend right now because I'm not on birth control so that can't be the reason.. But my vagina hurts.. Like it hurts to walk or sit down and it hurts to sneeze it feels like something pops in my uterus when I sneeze. I'm also still cramping but mostly in my back. I've never had period cramps in my back before. What could this even possibly be?