Suggest Treatment For Severe Pain In Legs While Lying Down At Night

I slipped on my hardwood floor probably about two months ago my upper left leg caught most of the fall. For about the past month I've noticed at night when I lay down my upper leg Aches so bad I have a hard time getting comfortable to sleep. I wake up many times on the night with this ache only relief I can find is to lay on my back and place a long pillow that I lauly under my entire leg. Seems to relieve the ache somehow. Aches little during day but is terrible throughout the nights. Any advice