It has run rampant here in Dallas. They even shut down a couple of schools up here
It went through my house 2 weeks ago and started with my oldest kid, then after about 5 days went to my youngest, then, of course, I got it.
The thing is, with stomach bugs, usually 24 hours and I'm good. This thing was like a bad houseguest. I had the exact same symptoms you did and it didn't get better until after about 6 days. This thing is brutal.
And I didnt necessarily feel horrible, just bad enough to not be able to do much else. Also, don't stray too far from a reliable facility. Good luck. Hope you get better