I have been having leg pain for a few weeks, mild at first, but now throbbing and getting hard to walk without pain. It feels like it is in my thigh, but also goes all the way down to my ankle. I wake up at night in pain and it continues to hurt all day. I have been taking Advil and it seems to help for a couple of hours, then the pain comes back strong. on a scale of one to ten my pain is a 6-8. I can not climb stairs very easily or step up on a curb with my left leg. I am a 61 year old female, non smoker.