burI am experiencing a burning pain on my left hand side in area of waist. It s better when I lay flat. It usually is better in morning. But by dinner time it begins and is almost breathtaking. I ve had fibromyalgia and wonder if it could have something to do with this - skin is very sensitive to being touched in that area (even by clothing). Also, I do have arthritis in my lower back. I am a female in my seventies, and relatively healthy.