Knee Problems

I've been having lower knee pains (closer to my tibia) and the top of my tibia feels badly bruised all the time. It was not to bad at November/December, hurt when putting on my bindings, but got increasing worse, by the end of the season, I could'nt take any impacts on it, even moguls caused tons of pain. and on the last day of the season, I was pretty much reatriced to small, non carving turns on groomers. Now the season is over, it is recovering VERY slowly. Went to the hospital, and there are no bone/growth plate damage. I can walk now with no problems, but anything past a slow jog is painful, cant kick a football, but I have a lot of movement in it. Has anyone had something similar and know what to do?