The mum-of-one, who gave birth to son Jaxon two years ago, appeared on Loose Women to discuss her worries over leaving him without a mother after she was 'convinced' she would die during childbirth.
The singer and actress, who gave birth at the age of 43, said she was so concerned that she even changed her will just before Jaxon was born.
'I was convinced I was going to die during childbirth. I had written my will 10 years ago but I changed it just before, in case', she told the Loose Women panel.
Claire also spoke openly about how becoming a mother affected her body confidence, saying she returned to work too quickly just nine weeks after giving birth.
She said: 'My confidence was gone. I was overweight. I would have liked to have had longer than nine weeks off work, but I was a single parent.
'I was the sole provider at the time, so it was a case of needs must.'
Claire and her partner Daniel Reilly split just nine months after welcoming their son. In a statement at the time, the star explained they'd still work together and support each other to bring up their baby.
She told MailOnline: 'Whilst we have decided not to remain together we are committed to bringing up our wonderful son and making sure we are great parents and supporting each other to achieve that.'
Claire sadly suffered two miscarriages before falling pregnant with Jaxon. After his birth, the new mum revealed just how much his arrival had turned her life upside down. 'It's a whole new thing', she said at the time. 'I am 43 and I have led a life where I have never had the responsibility. I have worried about my family and my partner and now suddenly he comes first with everything.
'You get really scared and you are worried that everything is going to be alright, will they hear and see and you are constantly monitoring them.'