I missed a day and a half of work after my first COVID shot because I was tired, achy, and had a headache. Just a slightly sore arm after the second and third shots. I had my fourth shot earlier today and expect I'll be fine. As far as the soreness in my arm those two Shingrix shots were a lot worse than any of the COVID jabs or my flue shot.
Don't ever underestimate my ability to find shit out.