After yesterday's Pfizer booster I was alert to the possibility of side-effects. I felt fine all evening, had some dinner, watched a bit of TV and went to bed.
I woke in the middle of the night and my arm felt a little sore. I touched the plaster the nurse put on and was shocked to feel a huge lump under it!
I started panicking, trying to remember what potential side-effects I'd read about. Then I thought about phoning NHS 111 just in case it was something serious.
I switched the light on to have a closer look.
Only then did I remember that the nurse had put a large blob of cotton wool under the plaster.