kindkit | immune systems, why are they like this?

I got my second COVID booster yesterday and I feel like absolute crap today. My whole body hurts, and I'm running a bit of a fever, which is making me feel chilled. I'm very glad I was able to get the booster on a Saturday afternoon so that I'd have two days off afterwards to recover.

I chose to get the Pfizer this time, because all 3 of my previous shots were Moderna. Mixing them is supposed to provide a little extra edge, which is probably why my immune system is currently on red alert.