I know IBS is another one of those problems some FMS sufferers struggle with. Some years ago I was having awful problems, CT scan revealed slightly inflamed gall bladder, with 2 huge stones that were too dangerous to remove or 'blast', at risk of blocking bile duct which is dangerous. I made some diet changes (no to dairy or fats for cooking) and since then I've stopped wheat which has benefited digestion.
A few weeks ago, the feelings of nausea, pains, bowel changes (sorry) have come back and getting worse by the day, & no appetite. Over the last 3 weeks, District Nurses have been making visits to try to get my veins to give up blood for testing, finally succeeded yesterday (deep small veins & odema etc). I've been coping quite well, mood wise :), but I'm starting to worry now. Surgery of any kind is a no-no, lung condition. I had Carpal Tunnel surgery a while ago, local anesthesia only. I felt traumatised (not made to be a hero), and it was a complete waste of funds and peoples' time, limited benefits for limited amount of time.
I would be interested to hear from anyone who has had similar problems and how it was/is treated.