Just wondering if anyone out there has experienced what I am feeling. I have extreme muscle pain in the back of my legs especially when I stand still placing pressure on them. I have to constantly walk or move my feet in order not to stand still. Also, when I sit on something hard, the backs of my legs ache. When I sit or lie down, my legs do not hurt. I am really concerned because these are the only symptoms I have. I am not fatigued or do not experience any numbness or tingling. It feels like a nagging, pulling pain. Any one experience anything similar? I am desperate.