The Since U Been Gone singer, who became mum to son Remington in April, 2016 admits her husband was far from happy when she blabbed about her pregnancy in August, 2015.
The star became emotional while singing her track Piece by Piece, about her strained relationship with her father, and she then told the audience at the Staples Center that she and her husband Brandon Blackstock were set to become parents again.
Read more: Kelly Clarkson done having kids after two ‘painful’ pregnancies
In video footage of the surprise announcement, she told concertgoers, "I was not planning on announcing this, but I'm totally pregnant... I'd like to apologise to my husband. That was not planned. I just didn't want you to think I was crazy or something.
"Honestly, I'm just so hormonal today. Nothing's wrong, everything's great... I haven't vomited yet. That is a freakin' win, y'all."
And in a new online chat with Tyler Oakley, Kelly admits the big announcement came as a shock to her husband.
Read more: Kelly Clarkson: ‘I don’t want to suck as a mom’
"My husband was like, 'You seriously can’t keep anything in!' We hadn't told our whole family yet.
"I just thought, 'These people (fans) are going to think I’m crazy because I was so emotional. I just have super doper pregnancy moments where everything is just 100 times more intense."
The mum-of-two, who is also stepmother to Blackstock's kids from a past marriage, recently insisted Remington would be her last child, revealing her pregnancies have been tough.
"Unless someone dies and gives us their kids or something, no (I won't be having any more)," Kelly told E! News. "I had miserable pregnancies, that's why."
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