I am having severe problems with both of my feet. The right top part of both feel as if they re on fire. Then the pain feels painful. This doesn t occur only when I walk. Most of the time, the pain is worst at night when I m trying to sleep. I also suffer from fibromyalgia and currently taking cymbalta. I m in constant pain from my shoulders, elbows, hands, knees, and now my feet. Could that be part of the fibromyalgia?