The 23-year-old, who hooked up with housemate Steven Goode while on the show, was rushed to hospital two weeks ago complaining of pelvic pain - and has now confirmed it was because she was pregnant.
Sadly, the egg had implanted outside of Kimberly's womb, and she subsequently lost the baby.
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'The doctor said that with the time frame it was definitely Steven's' said the star, who admitted to having sex with her partner inside the house.
The Playboy model revealed that the condom had split during one of their steamy undercover sessions, but she had not suspected she might be pregnant.
Steven seemed instantly interested in Kimberly on their arrival in the house, trying to chat her up on many an occasion.
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And luckily for him his perseverance paid off, with the couple now both out of the house and pursuing their new relationship.
Back in the house, Helen Wood was left red-faced when model Ash cut their midnight romp short, because he 'couldn't be a***d.'