my kitten and shots

my kittenn sol isnt eating. I went on saturday to go to the vet to get this four shots that he "needed". One of them were his rabies shot, but i am concern because he isnt eating enough.
i feed them both, one can and a half, because they weight 4.5 pounds, and they have dry food. Luna my other kitten is being a glutton, and is eating his food because he isnt eating. she is pretty fine, and she weights less then him. the dry food, he barely eats it. i am scared, and i dont know what to do. i went to go buy his favorite food as well. and nothing. he licks it then shakes, and leaves. i am taking him back tomorrow because they told me to wait two days, and i did, and now i am freakin out.

i dont know what reactions they are suppose to have. i go every three weeks to give them check up because they are kittens, am i over doing it. i dont know,

Veeshan was vaccinated this year and she was sick for 2 days. I made the mistake of getting her shots on a Friday so I couldn't call the vet till Monday. But she was better on the third day.

ok, i went to the vet, and they told me that they have a reaction like human when you get a flu shot. I was so sad, but he finally is fine. He is runnig, and eating like nothing is happening

I'm glad to hear he's feeling better. My cat Blossom had a reaction to her 2nd & 3rd shots when she was a baby. But only for a day. She was lethargic & not eating. I was so happy to see her back to her old (young) self.