I feel fine... I was expecting a little nausea, or a sore arm, but neither happened. Unlike the normal 'flu vaccine I get every year, I could 'feel' this one when they injected it, but it was only a sensation, not really any kind of pain

Apparently, with the Pfizer, it's the 2nd injection that can get interesting. Long-Suffering Partner has a friend who said he started hallucinating after his 2nd shot... I'm looking forward to that!!