I was at my GP yesterday for something else and mentioned getting the booster. The practice just happened to be running a Pfizer vaccine clinic at the time, my Dr went out out and came back with the injection and did me there and then. I'd had AZ in May and July. Had the whole gamut of side effects with the first AZ and nothing with the second. Last night and today I feel like I've been run over by a truck - teeth chattering, whole body aches and as weak as a wet kitten, bit of a fever (38.2) and a really sore arm. I'd forgotten how crap I'd felt with the first dose (bit like chemo!). I'd be interested to see if anyone else displays the same symptoms - I'm 54 so in the prime range for side effects.