In the middle of the night I got up to get a drink, and tripped and fell on my right arm and knee. They both proceeded to swell up immediately, with lots of pain in my knee.Ididn't dislocate my knee, and could still bend it with alot of pain due to putting pressure on the swelling. I didn't notice the swelling on my arm till afterwards because it didn't hurt. The swelling on my knee was the size of a baseball, and the swelling on my arm was the size of a grape. Both have gone down significantly, but my knee is still sore and stiff. Think I did any damage to my knee?