Thank for asking to HCM
I really appreciate your concern here the given history is suggestive of intestinal infection and the most likely organism would be protozoa, if I would be your doctor then I would treat this case with the following medicines,
1) Tab Metronidazole
400 mg twice in day for five days
2) Tab Dicyclomine
three times in day
3) Tab Chlorodiazepoxide twice in day
nothing to worry about this, hope this information helps you, have nice day.