Has anyone done it? I’m due to have my next AZ in early/mid July. However I now have a very important work thing 2 days after that I need to be on form for. I had bad side affects after the first vaccine. I want to move my vaccine either a couple of days earlier or 4 days later but I can’t unless I cancel first. I’m worried that if I cancel I will lose my spot completely. Has anyone cancelled and rescheduled? Were there any problems?