question: im a 20 year old female who was standing on my bed trying to put somthing on the wall and my knee gave out. I fell straight on my bedpost on my groin area and its very tender now. This happend two days ago and now im all black and blue and swollam down there, and can barly walk and it burns to go pee. What have i done to myself? Im 260 pounds and i am scared about what can be wrong