Have you been tested for celian disease or what is also called gluten intolerance (e.g., wheat, barley, oat,rye, etc...)? I also have fibro , tmj and celiac. When I slip up and eat something with gluten in it, I am extremely tired, "hung-over" and my jaw and neck hurt even more. I also get a sore throat. Look into it. Also, the gluten made me very down on myself.