Just a little tip. Don't plan an upper body workout the evening or day after your vaccination. I got my first dose Monday!!! I'm so happy! Holy heck was my left arm sore a few hours after I got it. I barely had range of motion this morning. I could not get comfortable sleeping last night. I had to forgo today's FB complete upper body workout and did a gentle cardio instead. They do advise you to exercise and move after you get the vaccine. It's finally letting up. My range of motion is back and I was able to do a yoga flow practice this evening without difficulty.
As far as how I feel over all the day after, I feel great other than the arm soreness. I didn't get any low grade fever, body aches, or headaches. The next round might be a different story. It's totally worth getting.