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I think you are right Pixie, especially with bruising.
My arm isn't bruised, but it still isn't right and I still haven't felt I can drive yet.
Can lift it a bit higher, so I'm getting there, but it has been 5 days now.
When I went for the Covid jab, the person who did that told me to completely relax my arm and I never had a problem with any pain in the arm, and I wish I had remembered that when I had my shingles jab.
JJ, if you have it done, just remember to completely relax your arm, it might make a difference.