I would consider doing some testing for h. pylori and see if you have it in high amounts. I would check out the symptoms to see if they match yours. 80% of people who have it are symptom free.
I would also check out parasites and consider doing a protocol to kill parasites. Has your doctor looked into either of these as the cause?
I’ve been recommending an anti-inflammatory diet for months but no one seems to listen. Broccoli, salmon, (fermented) cod liver oil are all foods good for this diet. Fruit is also anti-inflammatory and if you are not allergic to fruit, it could benefit you’re healing potentially.
Acupuncture is also great for stress and healing the body; acupuncture alone can heal the body and highly recommend it.