as you have a recent history of travel so the diarrhoea
is explained. and your throat remedy good to take amoxil. tylenol is good. add some aspirin gargles to it. and avoid irritants like spices cold and sour things.
for diarrhoea, rehydrate your self, use cefixime, get some metronidazole
and have a cholera vaccination
.take a single dose of secendazole too. try lactose free diet for some days with alot of fibers and soft diet
like banana ( will help potassium too) and rice etc
you will be fine