I've been off my knee for a while, and now I think it's ok (at least my doctor does). I still feel pain though whenever I try to squat deeply or clean. I think this may be from being off of it for a long time, I don't know. Any suggestions, or comments about what I should do? Stay off it more, do ________ to build strength in your knee again, just go back to normal the pain will eventually go away, etc. ...?