Its just normal stomach bacteria ?
you need to be tested for everything dont leave anything out
demand it there are nasty crap that can infect you from traveling
so run every blood test pee test every one
then you know for sure better safe than sorry
I dun understand your english
go to a specialist you were in a forghen country with there food
insist and dont take no on a a to z test they have to test everything if its a parsyte it needs to be gotten fast