I had it 2 yrs ago. Started feeling ill around 23:00, got sick all night 'til about 08:00. Then was wiped out for 3 days.
It's actually a virus that gives you gastrointeritis. It's the gastro that makes you wanna die for the first 12 hrs.
I know, because about 20ish years ago I used to get gastro every 6 months or so from a hiatus hernia. Vomit & defecate, in painful waves, about 1/2 - 1 hr apart for 8 - 12 hrs, then weak as a kitten for a week.