4 month vaccinations and Tylenol

Vicky • 28 yrs old - Dog lover - Eats everything
Hi mommies!
I just wanted to know if anyone heard that giving Tylenol to baby could weaken the effectiveness of the vaccines. I want to be prepared just in case she gets a fever or is fussy. Also, would you use a cold or warm compress on the injection site? Google is really confusing me. Lol.
I need some reassurance and some thoughts!