I apologize for the question as it has likely been answered many times, but now that my turn is coming up soon, I wanted to clarify. I am fairly sure I will be getting the Pfizer vaccine. Is the 21 days to the next shot exactly 21 days (i.e. Saturday to Saturday) or is it 22 (Saturday to Sunday)? I assumed it was Saturday to Saturday but someone just told me otherwise.
Related question: I am scheduled for a 6+ hour car ride 21 days after my first shot (i.e. Saturday to Saturday). Which is why I am so concerned about 21 days vs. 22 days. If I get my second shot first thing in the morning and get in the car within an hour, is it fair to assume that other than a sore arm, none of the potential side effects are likely to start kicking in until after I've reached my destination (roughly 8 hours after the shot)? I am apprehensive about being in a car for that long right after the second dose, but I have been led to believe that if I have side effects, they most likely won't really start until I've reached my destination. Mrs. CNC will be available to drive if I am not feeling well, but it still would not be ideal. Appointments are very hard to come by so, to quote Hamilton, I'm not gonna give away my shot.
Thanks in advance.