DS 16 months had a tummy bug exactly a week ago. Was sick Friday/Sat, loose poo on Sunday then fine by Monday. Still hasn’t picked his appetite back up and is being really fussy with food/not drinking his milk. We have noticed he keeps bringing food back up (sometimes what he has eaten the day before rather than his most recent meal) almost like when he had reflux (not actually vomiting) and he keeps burping which smells really badly like poo. Anyone else experienced this?