BTW, just posting to relate may own "jab" experience. The first one, I felt a little fuzzy in my right arm and leg (the side I got my first shot in) right afterwards but it went away later on in the day. A few days later I got a LITTLE sick, it felt like a very mild cold and without the blocked / drippy nose or coughing. That lasted for about 1.5 days I think. The second shot I had done on my left arm I didn't notice any of the above symptoms. Both shot locations felt sore after a day. I imagine that's how it would feel like if someone knuckle-punched you in the arm and left a bruise; if you touched it / lay on it, etc, it would ache. That gradually went away over a several days. I got the Pfizer one. I'll probably go back for boosters to make sure my immunity is topped up.
