Bend Shakey

Knee pain?
So, I’m in a musical right now (Footloose), and we have to do some pretty heavy dancing. Tonight, everything was going fine, and then, all of a sudden, I was walking down the aisle in the theater on a slope, and my knee started hurting super bad. To the point of not being able to put all of my weight on it. I sat down and massaged around my knee cap, and everything felt better, so I got back onstage.
Now, I can’t bend my knee or walk without a ton of pain. It’s a little swollen and feels a little shakey.
What’s wrong with my knee? It’s nothing really bad, right? What can I do to help it feel better?
ice for now. go see a doctor as soon as you can just to be safe.
Gamakatsu Skip Gap Shaky Head