Keep acting - keep trying new things - to give you a sense of control. Try eliminating acidic foods and adding bland ones. Take stock of your life. Are there stress triggers you can eliminate? I actually left my family for a few months to escape overwhelming domestic chores. I got a small apt. in a neighborhood where there are lots of public toilets so that I could just walk and unwind alone. It gave the marriage a break. I ended contact with a poisonous sibling. What a relief.
Recently I have reintroduced workouts on my elliptical trainer and strength training for pain relief. Liftees REALLY help sore neck and shoulders long term. Monster stomach often responds with the threat of explosion but if I'm home no problem. Monster doesn't like to be shaken but he's getting conditioned regardless. I cannot let Monster control exercise more than he does. It gets easier with practice. I also pray every day, which renews hope. I don't know how anyone can live without quiet, desperate pleas to the heavens for relief from the usual sorrows and joys.
Honestly, I have found NO HELP from MDs. If their reductionist approach doesn't yield an easy diagnosis, I haven't yet met one willing to pursue investigation. Maybe such MDs exist but I haven't met one.
I contemplated a Mayo Clinic visit last year but corona fraud restrictions created an unacceptable, bankrupting detention risk so I had to cancel.
Mostly, after my 'sabbatical,' I'm better. But there are enough flares to keep my attention. I've learned not to plan an outing after eating, never to walk more than a few blocks in a place without toilets and never to rely on transit. Few transit stations here have toilets! Who knew?
The human mind is much more adaptive than you might think. Crises pass and there's a break in the weather that will let you breathe. When that happens, take stock of what you're doing, thinking and eating so that you can maintain it. It's a chore to have to live so mindfully but baby steps.