Harley had his 2nd vac tonight. And he was ok when he first came in. After about an hour he started to sleep and he's been sleeping on and off since, which is unusual he's always bouncing around. He's also licking his lips a lot and I seen him gag a few times. He's meowing/crying when I pick him up, which he doesn't usually do. Is this normal? It's been 3/4 years since Pepsi got his first set and I can't remember how he was. I'm starting to get really worried as I've heard of kittens having bad reactions and dying.. Oh and his first vaccination was purevax but the vet gave him nobivac for his 2nd, could this cause problems?