Renee....sorry to hear your having problems with your leg.

I watched a programme last week that had a girl with very similar to what you are saying your experiencing although her leg would shake uncontrollably all the time,she could not hold her leg still, she could not walk and the pain she endured was enormus(sp?).
Please go to your doctor now before the problem gets any worse.

Take care and let us know how everything is going.