We are coming into Christmas and Vet apts will not be available except
emergency , not eating for more than two days is just such an
emergency especially accompanied by vomiting.
Vomiting , diarrhea will cause dehydration and no food causes Liver shut down.
I am not an expert and sure don't know as much as Opus and many others here but having been in Animal rescue , have seen things I wish I hadn't.