Sore arm after Covid vaccine?

[ihearttc]

I had my vaccine yesterday afternoon (I’m 44 and a TA, our local hub offered it to all school staff). I expected my arm to be painful today but it’s really painful and I just wondered if anyone knew why this vaccine is causing such a lot of pain in people at the injection site?

I have Pernicious Anaemia and have a B12 injection every 10 weeks. If anyone has ever seen the needle they use for that, it’s quite big and goes quite deep as the B12 is a really thick liquid but I’ve never had any issues post injection with that.

It doesn’t really matter because I’m sure it will go soon enough, just wondering why this has such a different response.

Have AZ on Monday and my arm is so sore - like wake up if I roll on it in the night sore. It's been getting worse for the last couple of days. I'm hoping/expecting it to settle down soon though!

It's because it goes directly into the muscle so causing bruising.

My vaccine was Monday, bad side effects that night and Wednesday morning was woken early by sore arm. Paracetamol helped. Today lots better.

@TopBitchoftheWitches

But that’s exactly my point, I don’t think it’s to do with that at all. I have an IM injection every 10 week due to having Pernicious Anaemia and I’ve never had an arm this painful before. I think the other poster is right and it’s to do with the solution itself.