Unfortunately, I had shingles first. I got caught in a vaccine age transition - when I turned 50, the vaccine in place was recommended at age 60 (hence not prescribed or covered for 50 year old). I guess within a couple of years, Shingrex came & was recommended/allowed for age 50, but I didn't get the memo & fell through the cracks. So at age 55, during chemo treatments & worn down, I got shingles. As soon as able after that, I got the Shingrex vaccine because I'll tell you I DON'T WANT SHINGLES AGAIN! I won't lie and say it's a fun shot, found it a little worse than the flu vaccine. But I still got the recommended 2nd dose because the shot didn't compare to actually getting shingles. I would make sure that what you're experiencing isn't different than what's on the information/problems listed on the side effect instructions you hopefully got though, as we all react differently to vaccines. Best wished for tolerance!