Day two of Pfizer C19 vaccine no. 2: ugh. They weren't kidding about the 'flu-like symptoms, which have laid both of us pretty seriously out flat. At least it's for a good cause.
your mileage may vary, of course, but i was pretty sick for three days (day of and two days after) after the first dose of the Pfizer vax. I hurt from collarbone to elbow and had the flu-type symptoms for two days. Feel better soonly!