You’re lucky. I also got my second Pfizer yesterday afternoon. After about 10 hours and zero side effects other than the arm pain, I thought I was in the clear but NOPE.
Woke up this morning, chills, body aches and fever. So drained have barely been able to move. Luckily, I didn’t get the 2 side effects which I least desired, that being the nausea and headaches. Still, very uncomfortable and at the time of writing this I’m 25 hours removed and don’t seem to be doing any better.