Took a knee on knee hit yesterday when I collided with another playing during a soccer game. Didn't even feel it at the time - I finished playing the game and rode my bicycle home. Once I Had relaxed a little while, my knee starting killing me, so I went to bed, elevated it and iced it for the rest of the day. I could barely make it up to my bedroom. This morning it's a little better, but still stiff, sore and swollen. Has anybody dealt with this kind of injury before? What did you do for it?