About a month ago I was playing foot ball for my high school knee and upon trying to make a tackle I fell on the inside of my right knee. This was very painful and was hard to deal with the first day. My knee hurt all the time and was numb. I was evaluated by our school trainer, and she said there was no tearing of ACL or MCL. My concern is that at some points it still hurts like an immense burning pain. I don't get a lot of pain, but his is terrible. The problem is the inside of my knee is still numb and has been for months. Is this nerve damage? and how and when should I do something?