First round of vaccinations!

M • Loving life! ❤️✌️
Let me preface this by saying I am 100% pro-vac being one of those people with compromised immunity that can't be vaccinated for everything so please don't try to talk me out of anything here...I'm not looking for a debate.
Anyway, today by 8 week old son gets his first round of vaccinations. I was just wondering if any veteran mommies have any tips for making the whole process easier on him and me! What can I expect afterwards? My grandmother told me he'd probably be fussy the rest of the day and possibly run a fever, is this true?