Got my first AZ today. No pain but am feeling a bit shivery 12 hours later.
Likewise, I had my AZ on Monday morning and had a bout of feeling shivery 12 or 14 hours later. For the 24 hours after that I felt, for the first time in 14 months, very lethargic I could not sleep for more than a couple of hours at a time - just like the days after back-to-back-to-back LHR trips. Now, 48 hours after the shot, I feel back to non-working normal.