Thank for asking to HCM
I really appreciate your concern looking to the history given here I could say that the chances of having intestinal infection is very likely and if I would be your doctor then I would treat you with the following medicines,
1) Tab Metronidazole
400 mg twice in day for 5 days
2) Tab Omeprazole
40 mg once in day for two weeks
hope this information helps you take care and have nice day.