Thank for asking to HCM
I appreciate your concern, what the history you gave here that may not be the viral infection but it could be protozoa infection of intestine, if I would be your doctor then I would treat this condition with the following medicines,
1) Tab Metronidazole
400mg twice in day
2) Tab Acetaminophen
three times in day
3) Tab Clidinium three times in day
hope this information helps you, have a nice day.