By the time I got to work, I had severe pains in my intestines. Some kidney pain, but mostly my intestines.
It finally went away after a couple of hours.
I went home at the end of the day, still feeling somewhat unwell.
I ended up going to bed at around 9:30pm, much earlier than usual. Even so, though, I didn't wake up until 9:30 or 10am.
At least I'm feeling a bit better today, though still not quite up to snuff.