I have a 2 year old male cat that I just adopted from a breeder. We have had him for about 2 weeks. He is a very calm cat and took to our home in a day or two. I took him to a vet for a check up, and he was given 2 vaccines...rabies and FVRCP (?). A day later..he vomited 3 times...was ok for a couple of days...and then today..vomitted again. He is vomitting cat food....no blood in the vomit. He appears to be fine...not lethargic or in pain. He seems to be his normal self. Should I be concerned? He is on a cat food that the breeder had him on. He is fed 3/8 C twice a day.