My flu & COVID vaccines were relatively symptom free. I didn't do anything but take some Tylenol beforehand. I probaby should have put a cold compress on my arm but didn't so I couldn't sleep on that side that night. It was sore, but not nearly as sore as the sore arm I had the first time I got the COVID vaccine. Good for you for getting vaccinated. I think even if you get the COVID virus but are vaccinated, it is supposed to be less severe. I really wouldn't know as I have NEVER gotten COVID,not even when H & my daughter got it this past Feb. I was semi-suspicious some of my psych cocktails may have helped in protecting me, who knows?! We had all gotten the vaccines and at the same time.