FAA mandates only a two day wait after vaccination. I suggest the risks from "long covid" should you recover from an initial infection are worse than most problems a vaccine could cause. I waited too, but after millions of okay doses of Pfizer I took one. I did suffer two days of 2nd shot malaise (fevers and lethargy) which is expected as my immune system ramped up to fight the mRNA "invasion" of the spike protein.