The Sunday Mirror claim the 38-year-old is “over-joyed” at the idea of having a baby with rugby star boyfriend Ben Cohen.
A source said: “She’s wanted a baby for years and would love a girl. As for Strictly, Kristina has not ruled out being back in the autumn.”
Meanwhile, the pregnancy news came as a shock to former England star Ben, 37.
The source added: “Ben wasnt expecting to be a dad again quite so soon. He was initially shocked. Now he’s absorbed the news, he’s really excited.
"He and Kristina found out so close to her entering the CBB house they havent had a chance to discuss the future in depth.”
Kristina, 38, is earning £150,000 on CBB and broke the news of her pregnancy to her fellow housemates saying: “There was something [that] happened in my life before I came into the house over Christmas.
“And obviously I thought it’s very private news, you know but because we are living as one family now and everybody is sort of supporting one another now.
“It happened to be that I found that my boyfriend and I are going to have a little one.”
She and Ben were paired on Strictly in 2012. He and estranged wife Abby – who have twin girls, Harriette and Isabelle, aged eight – are getting divorced.