We brought a new puppy home on Saturday and he's been having very loose stools which we chalked up to stress of the trip home and being in a new place, should note we are feeding the same food as the breeder and he had a dose of de-wormer on Friday. I have a vet appointment for him tomorrow but this evening his still had some blood in it. Wondering if this is cause for enough concern to take him to the emergency vet?