I'm not sure how to handle my current situation. I've been feeding my dog fromm chicken for about the last 6 months with no issues and then about a week and half ago, after slacking on brushing his teeth for a while, I brushed his teeth a couple days in a row until I noticed that he started have a little bit of diarrhea. I stopped brushing his teeth and his poop firmed up for the most part with a little diarrhea randomly, but now he's not eating as much and he's much less interested in his food. Hes never been food motivated really. He's been drinking water and eating his whole breakfast but he usually only takes a couple bites of his dinner now. I have added some chicken or egg in here and there recently and that does motivate him to eat his food. His energy level has been fine but today he actually threw up a little of a white foamy substance. Anyone have any recommendations, should I change his food, or should I just take him to the vet? Thanks for any help!