The Apprentice candidate shared a picture of herself on a hospital bed, and said: "My afternoon result of burning candle at too many ends."
In the picture, Luisa looks washed out with her eyes closed and the drip clearly visible on her right arm.
Her spokesperson told us: "Luisa has been diagnosed with a kidney infection and then had a bad reaction to the antibiotics. She is resting today before launching her Bakers Tool Kit live tonight on Ideal World TV at 8pm...no rest for the workaholic!"
Mum-of-one Luisa has been super busy of late. As well as running her cupcake business and promoting her Bakers Tool Kit brand, she's been attending lots of social events and the hectic schedule doesn't look set to end any time soon.
Luisa, 26, has been tweeting about a ball she plans to attend on Saturday which means yet another busy weekend.
Last weekend Luisa said: "Sunday lie-in does not exist."
We hope you're feeling better soon, Luisa!
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