Katie is said to have attended a scan without Kieran - who cheated on her with her best friend - and discovered that she is having another daughter.
A source exclusively told The Sun: "Of course Kieran should have been with her, but things have changed." Reveal has contacted Katie's rep for a comment.
Former glamour model Katie has kept a low profile since announcing that she is to divorce Kieran because he had been cheating on her with her best friend Jane Poutney for seven months.
The couple, who married in January 2013 and had their first baby together last summer, are expecting their second child in less than three months after Katie discovered she was unexpectedly pregnant again.
Katie broke news of her divorce via a series of Twitter messages branding Kieran "disgusting" and saying she was in the "worse [sic] pain ever".
A statement issued later said: "I appreciate most people will have seen my tweets on the subject of my marriage to Kieran.
"I make no apologies for them though it will be appreciated that, sending them immediately after Kieran confirmed to me what he had been doing for the last 7 months, those tweets were a sign of my heart breaking. That he was doing it with a close friend of nearly 20 years is hard to understand."
Kieran has kept quiet on the affair, although Jane - who is married - has publicly admitted that it did happen and that she "deeply regrets" it now.
However, despite the reports claiming she attended her latest scan alone, Katie is apparently not prepared to ban Kieran from their baby's birth.
After news of the affair broke, Kieran's grandmother Rosita Talbot, 80, spoke out and branded him a "naughty boy".
Acid-tongued Katie Hopkins - who is usually the first to stick the boot into Katie Price - also told her column readers that she is on the soon-to-be mum-of-five's side.
And Chantelle Houghton, who has a child with Katie's ex-husband Alex Reid, also jumped to her defence. She told Reveal: "It's the ultimate betrayal".
Following her Twitter outburst on 7 May, Katie has not used the social networking site. Although still active, Kieran has not tweeted from his account either.
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