Hey there! Hailey has been eating TOTW Pacific Stream for the last 2-3 months and a few weeks ago I've noticed she had these red spots(sort of pimples with pus) all over her butt area and a few scattered on her belly/chest. I took her to the vet yesterday and he said it was a bacterial infection most likely caused by allergy. Is anyone here feeding this food had any similar experience to mine? Prior to using TOTW she had been on Chicken Soup dry formula for years(she's now 5 years old) and never had any problem with allergy but then she started getting recurrent yeast infections in her ears/ she was scooting/scratching etc... so the vet advised me to switch her to a grain free diet and suggested i'd buy their food Royal Canin Hypoallergenic formula but it didn't look good to me. What should i do? Should i try a different protein source from the same brand? I am in need of your help/advice!!!

Thanks!!!