Would it be feasible my bad breath is coming from my stomach?

Yes: Seek the advice of a gastroenterologist for acid reflux/diet issues. It may also be coming from your teeth or gums.

Bad breath: Yes there are many people who have acid reflux coming into the mouth from the stomach you should see a gastroenterologist physician to rule iit out a your stomach being the source of the bad breath if not your stomac see your dentist to check out your mouth.