2 month shots...scared

My baby is so happy, and last night was our first long sleep in AGES. I’m scared I’m gonna screw him up or return back to no sleep.

We get his first shots today at 1 and I’m obsessively worried. Ive heard babies can get fevers, vomiting, and can end up screaming in pain and being up every hour at night after shots.

Looking for moms who already have experience with this. Is it gonna be ok? Will he sleep tonight? Will he go back to normal quickly? Will he be ok?