After reading through this thread again:

Gina, you said you're falling down. Do you have crutches or a walker or a cane to help you? If not, you need one of those to help you get around. Also; my knee stayed black/blue/purple for about 4 days or so. After about a week, it should start getting better. Something else that might help you is a lift on the toilet seat. Then, it's not so painful to get up--that was my worst pain. Have some ice handy too for the swelling.

Can you call your doctor tomorrow about physical therapy? Good luck.