Katie discovered she was pregnant after suffering stomach pains while on holiday in Cape Verde with husband Kieran Hayler and children Jett, Princess and Junior – her children with ex-husband Peter Andre – and older son Harvey.
The reality TV star and former glamour girl took a pregnancy test when she arrived home, and went to see her doctor the next day. The couple were shocked to find Katie was six months into her pregnancy – especially as she was still in her size 6-8 jeans!
It's believed Katie conceived around November time – just three months after giving birth to Jett, who was eight weeks early. Kate thinks it's possible that Jett and her fifth child may share the same school year.
Katie shared the news with Now magazine, following a leaked report over the weekend (Saturday, May 3). She told the magazine:
"I had no idea I was pregnant, let alone more than six months pregnant. I always laughed when people said that they never realised they were pregnant. I've had four kids and it happened to me. I usually put on loads of weight and you can only just see my bump now. I've had no cravings- I don't even feel pregnant."
The mum-of-four also said she was scared she might lose the baby when she suffered further stomach pains, especially as son Jett was born prematurely.
"I went into a complete panic because Jett had come so early and I knew it wasn't right," she said. "All these thoughts were rushing through my head."
What amazing name will Katie choose this time? Katie, 35, went on to say her doctor confirmed she had complications and that she will be taking medication, but didn't go into details.
She also revealed she wanted more children after baby number five, saying:
"I want more kids. I'm going to start again when I'm 40 but I think I need to give myself a rest before I get going again.
"With me and Kieran it's all about the kids and being together and just having a family. I'm much more chilled – haven't even had mad pregnancy hormones so I think that must be down to the fact he makes me so happy.