I’m booked to get my first vaccine soon (late 30s) and I know we are going to be offered an alternative to AstraZeneca. Will that happen on the day or will they just give me an a different one without mentioning it? I’m a worrier so if I have side effects like headache and fever I’ll be panicking I’ve got blood clots. I know I sound stupid, I want the vaccine but I don’t want a few weeks of worry afterwards.