Achy like a tetanus booster times ten!
Worst one I ever had was the original shingles vaccine out a couple years ago.....painful as hell, lump like half a golf ball on my shoulder that really ached for a month.
Two months after I got it my family doc laughed (!) and said it was 90% ineffective and I'd need to get the Shingrix double whammy.
Guess Mrs Postal and I were test dummies, but neither dose bothered her at all.