Sarah Harding cries because cancer fight means she won't be a mum

Watch: Sarah Harding cries about never having children

Sarah Harding has told how she cries because her cancer diagnosis means she will never be a mother.

The Girls Aloud star told fans last August that she had been diagnosed with breast cancer and that it had spread, and recently said doctors had told her she won't see another Christmas.

Harding has now written her autobiography, Hear Me Out, and in an excerpt in the Mirror tells of her sadness that she will not get to have children.

Read more: Sarah Harding shares how brain and lung tumours shrank before Christmas

"It might seem odd to worry about not having children when I don't even know how much of a life I have left, but it's there,” she said.

Sarah Harding attending the European Premiere of Batman v Superman: Dawn Of Justice in Leicester Square, London.
Sarah Harding (PA)

The singer, 39, added that “even if my prognosis was better, it still wouldn't be on the cards because of all the chemotherapy I've had”.

“It's making me cry just thinking about it,” she added.

In another excerpt from the book, Harding shares that she has been thinking about how she would like her funeral to go and that she has been pondering the words she wants on her grave.

“I’m thinking 'FFS' might be a good one,” she said. “It’s probably been my most used phrase throughout this, with one crappy event following another. 'For f***’s sake!'”

British group Girls Aloud, from left, Nadine Coyle, Kimberly Walsh, Sarah Harding, Nicola Roberts and Cheryl Cole  arrive at the Brit Awards 2009 at Earls Court exhibition centre in London, England, Wednesday, Feb. 18, 2009. (AP Photo/Joel Ryan)
Girls Aloud in 2009 (AP)

Girls Aloud – comprised of Harding, Cheryl, Nicola Roberts, Nadine Coyle and Kimberley Walsh – rose to fame after winning TV show Popstars: The Rivals in 2002.

Read more: Sarah Harding says she's 'fighting as hard as I possibly can'

They are known for hit songs such as Sound Of The Underground, Something Kinda Ooooh and The Promise.

They went on hiatus in 2009 and eventually went their separate ways.

Harding's book is available now.

Watch: Sarah Harding can't 'look at herself' after mastectomy