I also have to add that he takes something called CFS/FM Energy formula from:

http://www.immunesupport.com/

This, and low carbing, has made the most difference in his condition in many years, since medical science is not very up on the subject. But I urge you not to try to self medicate. Move now to get the best medical care you can.

Knowledgeable physicians can be found through this organization:
http://www.cfids.org/

I'm sure there is a fibromyalgia association, I'm just not familiar with them.
So many of your symptoms remind me of his (reflux, tiredness after exertion, fatigue, difficulty concentrating) that I wanted to let you know about this.