My wife and I have had two Pfizer jabs with no after effects. Our daughter had one AZ jab and a day later experienced a pain in the chest and in her left arm. It passed after an hour or so but she went to see her doctor. The doctor did nothing and told her to go to A & E if it happened again. She did get checked out by the hospital and all was fine. She has been fine since. She is concerned about taking her second jab when it comes up.