Thanks for writing your query.
After reading your post, I would suggest that you should get following investigations done :-
I would also advise that you should take an antacid like Omeprazole
40mg once a day before meals along with Domperidone
30mg. A probiotic along with digestive enzyme
preparation containing pepsin and fungal diastase after meals will have added benefits.
Further medical management can be planned according to the reports of the investigations.
You should eat light meals prepared under hygienic conditions. Also avoid spicy foods.
I hope this is helpful to you.