I work on my feet all day (housekeeper) When driving home after working, after about fifteen minutes my hip starts throbbing. The pain gets more intense, after about ten more minutes, then the pain travels to the back of my knee, and eventually down the entire leg. By the time I arrive home, after approximately forty five minutes, I am in so much pain, and can barely get out of the car. Could this be a type of arthritis, artery disease, or some type of pinced nerve