My Husband Was Having Some Issues With Thrush So Hes

My husband was having some issues with thrush so hes been on nystatin and he had some diarrhea and vomitting just came out of the hospiutal has a egd and colonoscopy had a polyp and some diverticulitis hes still on the nystatin and hes been on floconosol for the rest but now hes burping and it smells like feces and is stomach is very bloated need to know could that be a side effect from the nystatin or....