I would call the vet bc my dog Daisy when she was a puppy they had given her shots and she ended up having a reaction like that she was wobbly and couldn't walk. They gave her benadryl and a shot of cortisone. In an hr she was fine.
Daisy is 6 yrs now and still can only get 1 shot at a time and has to have a shot of benadryl before the vaccination.
I also have Pixie get one vaccination at a time. I hope your baby feels better soon.
__________________  Proud Mom of Daisy and Pixie  |