vaccine reaction

Hello, I’m new to this lair. I got my Sphynx about 2 months ago and he got his last round of boosters a few weeks ago. I now noticed a lump in his leg, where I believe the injection was, but I’m not entirely sure which leg he had the injection on. The lump is about a Penny size, so I’m extremely...

Last Tuesday Ari went to the vet and got his vaccines but it was a nasal one instead of the shot. Since about Friday he's been sneezing up a storm, he actually scares himself sometimes because he sneezes so hard! Lol. Is it possible the sneezing is from the vaccine or is this more uri symptoms...