covid-19 in Speakers Corner 8 hours ago After the first shot of the Pfizer, I got a lower back cramp that was so bad I could hardly walk. Lasted maybe ten hours total...most of a typical day...then went away as quick as it came. That was about it on the side effects. Second shot comes tomorrow morning. Wife keeps worrying about side effects LOL. I mean a LOT of worrying. I finally told her: "Well what's better? Some side effects, or DEATH?" (from Covid) I kind of laughed. She stopped complaining.