Chloe Madeley sparked concern after being rushed to hospital with stomach pains.
The 29-year-old fitness fanatic shared a post on her Instagram account on the details of what happened.
Chloe said she was doing a photo shoot when she came over with a horrible illness.
Uploading a pic of her super toned tum, she wrote: “So yesterday was interesting, and by interesting I mean HELL.
“I got gastro mid photoshoot and after 9 hours of vomming every 5 minutes had to go to hospital for severe dehydration.
“Just had some toast which was EVERYTHING and now trying to de puff my eyes after hysterically crying by about hour 8 of convulsing yesterday #SickCrying
“Guys, if you get gastro get an anti sickness shot because they are a holy gift from santa sickness [sic] ”
Her fans rushed to the post and wished her well.
One said: “Oh no that sounds horrendous! Hope you’re back to your bouncy self very soon.”
“Aw hope your on the mend ❤”, said another.
A third said: “Hope you feel better chlo xxx”
The personal trainer and nutritionist, who works out six times a week, has also recently admitted that she’s tried to get her famous parents to make healthy changes to their lifestyle.
She said that she thinks her dad Richard, 61, is “fit and healthy”, but her 68-year-old isn’t.
Talking to new! magazine, she said: “I tried to get them to stop eating mounds of white bread and it didn’t go down well at all.
“They were like, ‘No! Don’t bring that chat over here. We don’t want to hear it’. So I gave up then. That was years ago.”
Chloe also started her own business called Fitness Fondue, which aims to help people make positive changes to their lifestyles.