Congrats on having a smooth experience!
Everyone in my family breezed through their shots with maybe a little injection site soreness. My husband didn't even have that, and made me check to be sure there was actually an injection mark!
Meanwhile, I was so sick after my first Pfizer shot -- muscle aches, joint pain, head ache, nausea, and extreme exhaustion. It felt like a weird 24-hr flu. I heard from everyone that the side effects of shot #2 were much worse than #1, so I cleared my calendar and braced for the zombie apocolypse... and nothing. My arm was a little sore.
Here's hoping you'll have smooth sailing through shot #2 as well!