You should get one. You will be fine. Some things happen rarely, but COVID-19 is not rare. I have a friend who went into anaphylactic shock from the first dose of the Pfizer (which is why they have you hang out for 15 minutes) and so now she can't get the second so she is at risk. OTOH I have another who was brought inches from death by COVID-19 (and who got vaccinated first chance he got after that experience) and another who has lost many friends and relatives to it. Vaccination really is your best bet. It's free everywhere. If someone tries to charge you then something fishy is going on.