Moderna - 1st shot sore arm for about 2 days and tired. 2nd shot was sure I was dying and if not wished I would. Hurt in bones and muscles (not ache hurt) severe headache, diarrhea, throwing up, chills, slight fever. Started around 3 am and the most severe ended around 3 pm with the headache toning down to a dull ache for 2 days. No appetite for 3 days (good way to loose those 5 extra Disney pounds)
Hubby - Moderna - 1st shot nothing but a little tired. Got his second yesterday, was a little tired last night, headache today but just a dull one, arm a tad sore, stomach a little upset but nothing worse than if you ate too much. I officially dislike him a lot, was going to hate him had he had no symptoms.
This sounds like my husband and I. I had my first Moderna vaccine five days before he got his. The first two days, my arm was so sore that I couldn't move it at all. That dissipated and was no big deal. I also took a four hour nap the day after I received it. I thought I was home free and feeling pretty good about the whole experience and how I hadn't had any of the flu-like symptoms or more major body aches. That all changed five days post-vaccine...
I awoke at 1 am after rolling over in bed and being hit with the worst dizziness I have ever experienced. I swayed my way to the bathroom with the vertigo threatening to pitch me down the stairs. I got to the toilet in time to vomit and managed to repeat that scenario three more times by morning. The dizziness and nausea...there are no words for it. It was constant and unrelenting. The slightest movement set everything spinning and the vomiting would follow. Closing my eyes made it worse, so I laid on the bed, unmoving, not eating, hardly able to focus for the entire day. I thought I was doing a little better about 18 hours after it had started, so tried to eat something, but that just resulted in me throwing up three more times before bed. I rolled over three times that second night...I know, because the dizziness would hit me again, but thankfully, the nausea had dialed back a bit. By mid-morning the next day, I was doing a lot better. My husband had looked up the symptoms of delayed dizziness/vertigo online, where he read that it was caused by an immune response and inflammation in the inner ear.
My husband got his first shot while I was in the midst of all of this. I at least expected him to be tired, but nope. He flapped his arm around, showing me how much mobility he had, and hasn't needed an extra nap at all!!! Not that I wish what I had on anybody else, but seriously??? He had practically no noticeable reaction.
I will say that I am super nervous for my second shot, given that much of what I have read says that the second dose packs the punch. The first dose stimulates the immune system, and the second dose causes a stronger immune response. This does not bode well for me.
ETA: I didn't know what to answer for the poll. To me, this was a serious response...debilitating and a living hell for a day, but it wasn't life threatening. There are definitely more serious side effects, such as anaphylaxis, blood clots, or death, but while I was going through this, it was pretty awful.