He's hospitalized at the vets right now but he didn't eat for three days and vomited any fluids injected for all three days. The vet seems stumped. He was using his litter box ok and seemed to have no trouble with those functions so it's not a blockage or UT infection with he has a history of but he must of vomited at least 30 time the last 3 days. Has anyone else experienced simptoms like this with their cats?