Twisted Knee

Has anyone twisted a knee before that can offer advice?  I twisted mine last night while I was playing soccer and I am very worried.  It hurts pretty bad but I don't think I am going to go to the doctor, unless I wait a couple of days and I don't feel any better. I am at work and have propped it on top of a filing box to "elevate it" I also iced it while on my lunch. Any other suggestions for care?

I also want to know how long it may take for me to be able to work out.  I NEED to work out to lose weight and I am worried if I don't I will gain weight.

I've had 2 sports injuries from soccer/swimming (yes, swimming can be hard on the knees) and recommend you go see your doctor. You only have one pair of knees. I don't have anything on the cartilage of mine because I didn't insist on getting help, and ended up needing surguries and was off my knee a lot longer.

Just my 2 cents.