Due to a lower back surgery I had in 2008 I was left with drop foot in my right leg. I have recently had a spinal chord stimulator implanted to help manage the chronic pain in my legs and back. Recently I have been having more problems with my right leg. It swells, feels cold but when touched it is usually warm, there is discoloration in my lower leg and foot once swelling starts. When sleeping if I turn to sleep on my left side my knee will start to hurt so severely it will wake me up in pain and hurts severely to move.