I Have Leg Pain Starting At The Hip Past My

I have leg pain starting at the hip past my knee. It seems to be better in the morning but at night it worsens. This is not related to exercise or injury of any sort. I noticed about 2 weeks ago I moved and felt that I might have twisted wrong. The pain at night after a day at work (office work) it gets worse, between 1-10 it is a 9 and it seems to come on during the day but it is tolerable. At night I am taking ibuprofen for the pain. just walking is so painful that I begin to drag my leg.