Thanks for writing your query.
After reading your post, it seems that your symptoms are due to gastritis
An Endoscopy may be helpful to confirm the diagnosis. Also get your stool examined.
I would advise that you should take an antacid like Omeprazole
40mg once a day before meals along with Domperidone
along with digestive enzyme
preparation containing pepsin and fungal diastase after meals will have added benefits.
Following precautions will be helpful :-
1.Avoid spicy and oily foods.
2.Avoid being empty stomach for long periods.
3.Avoid mental and emotional stress.
4.Avoid smoking and alcohol, if any.
5.Avoid self medications, especially pain killers and steroids.
6.Drink lots of water daily.
7.Eat light meals prepared under hygienic conditions.
8.Avoid gas producing foods like peas, cabbage, legumes, etc.
I hope this is helpful to you.