The X Factor 2013 winner delved into the 'perhaps too much information?' territory by confessing over the weekend that baby number three was likely the result of some quick end of year fun with husband Craig.
Sam told the Daily Star: "It was New Year's Eve before I went out to perform at G-A-Y club. We were staying in a hotel around the corner and I said: 'Come on we have five minutes, let's go!' We've been married for ten years so there is no romance any more."
Her admission came as she did some last minute promotion for debut album The Power of Love, available from Monday, 24 March.
She was snapped out and about in central London on Sunday (23 March), paying a visit to the BBC Radio 2 studios in black jeans and a patterned blouse.
Sam's already had chart success since winning X Factor in December 2013 under the tutelage of Sharon Osbourne, scoring a Christmas number one with winner's single 'Skyscraper', and will be hoping her Power of Love album matches that.
Whatever happens, however, she says family always comes first.
"I couldn't be happier. My kids are more important than my career anyway," she added to Daily Star, after fans questioned whether it was a good career move to get pregnant right now.
"I'll work for as long as I can and then I'll have about two months' maternity leave before going on tour. But I'm going to pay my mum to come on tour with me to help look after the baby."
Sam postponed her planned solo tour from this year until 2015 as a result of her pregnancy.
Sam's not alone! More stars who've announced pregnancies in 2014 below!
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Watch Sam's 'Skyscraper' music video below!
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