You can also remove fluoride from water using a deionizer with ion exchange resin. Fluoride can also show up in foods and beverages processed with fluoridated water, see this study which comes from a part of the world where fluoride is present in the ground water.

As you mention, fibromyalgia, irritable bowel syndrome, and chronic fatigue syndrome appear to share a common cause. I recommend studying the inflammatory response.

Based on the eating habits you describe, it sounds like you may have an excess of Yin energy if you are open to Eastern medical theories. This is a relatively new concept for me but I'm including it in case you find it helpful.

Again, I am not a medical professional and my comments are not to be construed as medical advice, but I am happy to help if I can. I hope you can find a suitable professional to supervise your recovery.