For the past two months I have felt a mild, dull ache behind my knee along with other leg pain. It was never too bad, until today, it hurts really bad to straighten it and walk on it. It subsides when I bend it. The feeling is like that of a twisted ankle or something but behind my knee. It's pretty intense.
I don't know if its related at all but my knee always makes a crunching sound when I stand up...Also i'm 20 yrs old, female so maybe that will make a difference too in what it could be. Thanks!