Thanks for writing your query.
After reading your post, I would like to suggest that you should get your stool examined for any infection or worm infestation.
You can take an antacid like Omeprazole
40 mg along with Domperidone
30 mg once a day before meals.
along with a digestive enzyme
preparation containing pepsin and fungal diastase after meals will have added benefits.
Antibiotic and antiamoebic can be added according to the reports of the stool examination.
You should eat light meals prepared under hygienic conditions.
Also maintain your hydration.
I hope this is helpful to you.