Thank for asking to HCM
I really appreciate your concern, the history given here is suggestive of intestinal infection and the most possible causative organism would be protozoa infection if I would be your doctor then I would treat you with the following medicines,
1) Tab Tinidazole
700 mg twice in day for two days
2) Tab Omeprazole
40 mg once in day for two weeks
3) Tab Domeperidone 30 mg once in day for two weeks
hope this medicine helps you, have nice day.