Holy cow. I didn't think I'd be hit so hard after the second dose. I've casually estimated maybe about 1/3 of my friends got a bad reaction from the second dose, so I wasn't too concerned. Further, I can count on one hand how many times I was bedridden due to illness as an adult. Big mistake.
The first dose back in March, I had arm pain for about two days. Nine days after, I got some bad swelling, pain, and itching about three inches below the injection site. This went on for about four days.
Got my second Moderna dose on 4:30 pm on Saturday. Arm soreness, but otherwise fine. Woke up Sunday to body aches all over and chills. Took care of all my pets and then basically stayed in bed till the late afternoon. I tried to get up and do a little bit of work and walk around, but couldn't do it - just weak all over and headaches on and off all day. My house was in the mid 70's Fahrenheit, but I was either under the covers or wore a jacket all day. I took my temperature at various times and it peaked at 100.4 in the evening.
Went to bed early, slept in, and things are more or less back to normal today. No temperature, no chills, arm even feels near normal. There is some lingering body aches.