1. as all tests came negative and symptoms starts with wrong diet: probably you should consult a Gastro enterologist regarding any Functional Dysmotility of Intestine like IBS
(Irritable Bowel Syndrome
2. take high roughage diet with fruits and vegetables.
3. avoid fatty foods, oil,ghee,raw vegetables, overeating.
4. eat at a leisurely pace, if in hurry, eat less quantity.
5. eat less quantity at a time, and chew thoroughly.
6. take plenty of roughage: fruits, vegetables, salads, sprouted pulses.
7. do not take ice cold
foods and drinks, avoid cold water from refrigerator.
8. use less amount of oil in the recipes, avoid yellow of egg.