My sister and others were obsessed with how our 84 year old father was going to handle the second Moderna shot. They assumed the worst because they knew people (people who were not wimps!--their words not mine) who felt terrible after the second shot. When Dad reported that he had literally no reaction whatsoever to either shot, they didn't want to believe him.
The moral is: don't stress about potential (and quite normal) immune responses to the vaccine. Outside of very rare, severe allergic reactions (which usually happen within 15 minutes after injection and have been mostly relegated to people with known severe allergies who chose to take the risk of being vaccinated anyway), there is every chance you'll feel nothing. And if you do feel something, it will be normal and probably relatively mild (unless you stress yourself sick over it).
I've been achy and tired for twenty years. And hot/cold flashes have been a daily affair for nearly as long. So how would I even know if it could possibly be attributed to the vaccine?
