Thanks for choosing HCM.
Your problem seems to me like a case of Gastritis
with Hyper Flatulence
You need to do the following-
1] Try & loose weight by 10% of present wt.
2] Start reducing fried foods, sweets, carbohydrates etc. But take plenty of greens, fresh fruits, & water & Juices.
3] Take a regular walk / exercise regimen.
4] Get some anti flatulent s off the counter & try for a week.
5] Check your TSH values in the blood to rule out Hypothyroidism
If not better get medical help
by visiting your doctor, who may suggest an Endoscopy.