About 8 weeks ago I experienced pretty good pain in my lower back and hip that made it difficult to walk very far. The pain cleared up after about two weeks, but since then I have constant soreness in my thigh muscle (the top of my thigh, not the back). My back and hip don t hurt and I can walk fine, but the soreness and often stiffness is always there. It is most noticeable after sitting or sleeping. I have ben exercising and stretching but it doesn t seem to go away.