My GP agreed that I could self inject my monthly B12 rather than coming to the surgery for the nurse to do it.
He gave me a prescription for 5 ampoules (5 months worth as far as he's concerned) of hydroxocobalamin which I have now used up a few months ahead of schedule as I've been SI approx every 10 days which has kept me feeling energetic, fit and healthy.
Today for the first time I used an ampoule of hydroxocobalamin bought from Amazon.de (1000 ug/1ml made by Rotexmedica). I must have hit a blood vessel (in teaching me to SI the nurse told me I do not need to draw up to check) as I bled quite heavily after withdrawing the needle.
The injection site has bruised slightly and has a swelling (about the size of 1/2 a hens egg).
Has anyone had this swelling problem before? I don't mind if it's caused by hitting a blood vessel but I am very worried it might be an allergic reaction in case it happens again when I next SI, but worse.
(Before being diagnosed with PA I had a serious allergic reaction... anaphylaxis....caused by eating a peach. The proteins weren't digested in my stomach as surprise surprise I didn't have enough acid and my immune system over reacted to the presence of peach protein in my gut as that is almost identical to birch tree pollen protein which I am allergic to).
Anyway, I guess I'd feel reassured if others experienced swelling after having an injection that bled heavily.......