Thanks for writing your query.
After reading your post, it seems that you are suffering from infection of the gastrointestinal tract and needs proper management.
You should get your stool examined and take antibiotic/antiamoebic according to the report.
In addition to the antibiotic/antiamoebic, you should take antacid
20 mg along with Domperidone
10mg once a day in morning. Also take probiotic
Antispasmodic like Drotaverine
one tablet for pain in abdomen will help in relieving your symptoms.
Take all medicines under medical supervision after getting yourself examined by your doctor.
Have light diet for few days. Avoid fish and other heavy meals.
If you follow dietary control and take proper medicines, I hope you will feel normal within 2-3 days.
I hope this is helpful to you.