My boys had huge lumps at the vaccination site, both peed several times in the
house(although they are 100% potty trained) and threw up too. They are almost
4 years old, and this is the only year we had such a reaction. It took a couple of
days until they were back to normal. Consult your vet if there is no improvement
after 2 days...or if you are concerned give him/her a call in the morning, see
what they say.