Thanks for writing your query.
After reading your post, it seems that you might be having infection of the gastrointestinal tract and needs medical management.
I would suggest that you should get your stool examined.
I would advise that you should take an antacid like Omeprazole
40 mg once a day before meals.A probiotic
along with digestive enzyme
preparation containing pepsin and fungal diastase will have added benefits.
You may need antibiotic or antiamoebic, according to that reports of the stool test
Eat light meals prepared under hygienic conditions.
Also maintain your hydration.
I hope this is helpful to you.