I have a 4 year old cat who's really healthy, like he's never ever been sick. when i got home from class, i saw there was a pile of vomit on the floor and i cleaned it up and checked on him, and he seemed fine. like a half hour later, he vomited again but it was mostly just liquid, like bile. He's not himself, and he's acting very moody - he's not reacting to his favourite toys, i tried to feed him his favourite vitamins but he was completely uninterested in it. its only been an hour since but I'm really quite worried. The vet I called said that I should wait it out until tomorrow but I'm really worried. Does anyone know what I should do?