At emergency vet hospital with the 4th of the pups now same symptoms two Parvo tests negative, two fecals negative - bloody diarrhea, vomiting and lethargic interested in drinking but vomits immediately - any suggestions of other testing or things to try???? I have lost two babies in a less than 12 hours of onset of symptoms - two battling need some help!!!! Please. Maybe food? Water? But what tests??