The soreness should start to dissipate over the next day or two. Mine is nearly as bad the 2nd time around.My wife and I received our first dose of the Pfizer vaccine this morning. It's been about 8 hours and, so far, just a very mild soreness in my arm and a slight headache (which may or may not be due to the vaccine).
We get our 2nd dose on Feb 22.
Feeling relieved....
Mark