I have regular B12 injections so I'm very used to them by now, I've had tonnes of them.
Today I had one privately and it's gone totally differently to usual or ever before. I didn't feel it "going in" (not the stab of the needle but anyone who has B12 knows that feeling pressure as they force the liquid in, it's very distinctive).
My arm also doesn't hurt at all whereas normally it's very sore afterwards. I can't feel that anything has happened at all which is really weird. This has never happened before so I'm a bit worried about the effectiveness.
How could it be so different to normal?
(I don't have any doubts about the injector, by the way, they are a healthcare professional and very experienced.)
Thanks for any thoughts or advice.