leg muscle pain

Has anyone suffered this before...leg muscel pain. In the back of my right knee and sometimes the pain moves down into my right calf. I've always been active with step aerobic, bicycling, walking on a daily basis. During the month of October I was on pregnisone for about 2 weeks. Then in December the doctor prescribed it again for 1 week. I've noticed since October when I visited Chicago that my right knee ligament began to hurt. I can't walk without limping. This limping has increaxed since September to where I am limping and hurting everyday. I've had xrays taken but I have yet to see the doctor. I'm taking vitamins, CALM, and 600mg of Motrin to help ease the pain but nothing works. If I sit longer than 5 mins. I can't straighten my leg when I stand. I can't put any weight on the right leg.
Has any of you experienced this before? Tweet