The WAG, 31, found her relationship with footballer Kyle, 33, in tatters after he was named as the father of influencer Lauryn Goodman's five-month-old daughter.
Annie, who is seven months pregnant with her and Kyle's fourth child, is said to be under a great deal of stress and has found the scandal 'deeply traumatic'.
A source told The Sun: 'Annie is at breaking point because of the spotlight that has been put on her. She is in the final stages of her pregnancy and is terrified about going into labour early.
'Annie is wrestling with her emotions because of her separation from Kyle and is deeply concerned about the impact of all the children involved.
Annie Kilner fears she may go into labour early due to the stress caused by her split from husband Kyle Walker , her friends have reportedly claimed
The WAG, 31, found her relationship with footballer Kyle, 33, in tatters after he was named as the father of influencer Lauryn Goodman 's five-month-old daughter
'She feels she can't leave the house now because of the scrutiny and interest in her which she has no desire to be a part of at this time.'
MailOnline has contacted representatives of Annie Kilner for comment.
While it's been claimed Annie wants to put on an 'united front' with the Manchester City player, their two-year marriage is in tatters.
Annie has three with her estranged husband Kyle.
Amid the ongoing paternity scandal, it's been claimed Kyle and his betrayed wife will 'do what they can' to appear unified and 'put their children first' after his affair.
England star Kyle has been branded a 'disgrace' by fans after he admitted to fathering a secret child to influencer Lauryn during his marriage to 'best friend' Annie.
He had already fathered a son, three year-old Kairo, with Lauryn following an earlier separation from his wife in 2020.
But a source told the Daily Mail: 'Kyle and Annie put their children first. They will do what they can now and in the future to stay united, however that may look.'
A source said: 'Annie is at breaking point because of the spotlight that has been put on her. She is in the final stages of her pregnancy and is terrified about going into labour early'
On December 27 Annie allegedly asked for proof that her husband was the father of Lauryn's son and baby daughter.
Lauryn said: 'She was asking all sorts of questions. I said, 'I don't want to hurt you', but she insisted on seeing photos, getting details. I showed her one of Kyle and Kairo playing football together'.
She told The Sun: 'I know he has got photos of our kids up at Manchester City, I've met him lots of times since Kairo was born too. He has met his daughter.'
The influencer previously said she showed Annie a DNA test and paperwork with her daughter's name on it.
Kyle appeared to show contrition this week following the revelations.
He told The Sun: 'What I've done is horrible and I take full responsibility. I made idiot choices and idiot decisions. I can't begin to think or imagine what Annie is going through.
'I've tried to ask her but there's pain and hurt. The man that's meant to love, care and be there for her, did this.'
Kyle admitted he wanted to 'curl up in a ball' after his relationship with Lauryn came to light earlier in the month.
But he said the only person to blame was himself and admitted he had made 'stupid choices'.
In 2020 Lauryn confirmed the father of her oldest child, son Kairo, was Kyle and the footballer broke the news to his devastated wife hours before it went public.
He moved out of the family home to rental accommodation in nearby Hale, Cheshire before Annie agreed to take him back, with Kyle agreeing to sever all contact with Lauryn beyond his ongoing financial commitments.
The footballer is a father to three children with Annie (pictured), who is currently pregnant with their fourth
Then in early October 2022, the footballer travelled to London for groin surgery and met Lauryn. He confirmed the pair ended up sleeping together.
Weeks later Lauryn broke the news she was pregnant again, with Kyle revealing he almost 'fainted' when she called during a training session.
Kyle kept Lauryn's pregnancy a secret from his wife and has said it was Annie's own pregnancy which was 'the straw that broke the camel's back.'
While her footballer husband was away with his club, Lauryn messaged Annie on December 27 2023, revealing the truth about their relationship and the parentage of her second child.
Annie, who is expecting her fourth child with the footballer, announced they would be separating earlier this month after 13 years.
The footballer has since moved out of their £2.5million home in Prestbury while Annie remains at the property with their three sons.
MailOnline can reveal that Kyle is fighting to save his marriage. The pair tied the knot in November 2021, but he continues to live apart from his wife after she kicked him out of their £2.4million marital home.
He will be attending all of her future baby scans and continues to be present for their three children.
Announcing at least a temporary separation earlier in January, Annie told Instagram followers: 'Sadly, after many years of marriage and three wonderful children together, I have decided to take some time away from Kyle.
'I do not wish to comment on the position any further. For now, I ask that the privacy of myself and my three young children be respected during this difficult time.'
Kyle has been slammed by fans as 'vile' and 'selfish' after he admitted to fathering a secret child during his marriage to 'best friend' Annie (pictured together in 2019)
Kilner announced her separation from footballer Kyle last month after two years of marriage
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