I've had pneumonia shots, but it took 2 spaced months apart, as did my Shingle shots. The second one made me feel so sick I thought I had Covid for a while and my arm also hurt for a couple of days. Not as bad as Shingles, though. Not being very bright, when I first had Shingles, I read that capsaicin, the active ingredient in chile peppers was good for Shingle pain so I applied some when the lesions were red and oozy. Should have read it is good for the ghost pain people suffer from after the lesion have gone. Rubbing it into fresh ones wasn't the best of ideas. And yes, you can get Shingles more than once, hence the shots of Shingrex.