Thanks for writing your query.
After reading your post, it seems that you might be having infection of the gastrointestinal tract.
You can take an antacid like Omeprazole
40mg once a day before meals along with Domperidone
An antibiotic like Ciprofloxacin
500mg twice a day along with antiamoebic like Metronidazole
400 mg thrice a day will cure the infection, if present.
Taking a probiotic will have an added beneficial effect.
Dicylomine can be taken for abdominal pain
Eat light diet prepared under hygienic conditions. Also maintain hydration.
If the symptoms persists, get your self clinically examined and investigated.
I hope this is helpful to you.