Thank for asking to HCM
I really appreciate your concern looking to the history given here I could say that this could be Protozoa infection and if I would be treating physician of this case then I would treat this case with the following medicine,
1) Tab Metronidazole
400 mg twice in day for five days
2) Tab Omeprazole
40 mg once in day for two weeks
hope this information helps you, have a nice day.