Same here. My arms were too sore to lift and I spent the whole weekend on the couch with fever, aches, and exhaustion. At least it shows the immune system kicked in.
I got my seasonal vaccines the day before and it has really knocked me down. Skipping the politics, but anyone getting the latest COVID version might handle it better than I did yet should expect to feel wiped out. I've spent the day drifting in and out of sleep on the sofa.