i'm experiencing a pain in my left leg for a few days allready, it started down under my knee as a sharp pain, traveling up to my knee and now is close to my groin and it is coming and going as a very sharp pain, I never had that before, I do have a arthritis in my joins and now I do have dificulties even with a walking and at night it is very uncomfortable , keeping me awake....I'm female, 49yrs. old