My cat just had his Rabbis shots plus boosters, now he is lazy and won't eat?

Is he just having a normal reaction to the shots? He had them about 24 hours ago, and about 12 hours after his shots he became lazy and didn't want to go anywhere. I checked his nose and it is dry. Plus he won't eat or drink, and when I try to carry him to the food he cries and wants to go back to bed. Is this normal reaction to shots? I bought him from the SPCA last year, so this is the first time I gave him shots that I know that something happened afterwords. Please help me. I will call the vet tomorrow when they are open, but am worried for him now!