have an extreme burning pain in my left thigh and buttocks, it gets worse throughout the day, it started months ago but didn t get this bad until recently, before it was just dull, now it burns or is sharp, I also get slight burning on the left side of upper back under shoulder blade, but that burning isn t painful. My lower and mid lower back also hurt. I ve had no injury this just began and progressively got worse over a few months. Norco doesn t help and neither does Motrin 800