Sarah Harding is warning others to seek treatment after she delayed going to the doctor about her cancer because of the coronavirus pandemic.

Sarah Harding

Sarah Harding

The Girls Aloud singer is battling advanced breast cancer and has reportedly told pals she "held back" from talking to doctors about her pain due to COVID-19.

A friend told The Sun on Sunday newspaper: "Sarah held back from speaking to her doctors about how much pain she was in because of the pandemic and because she was scared. Sarah is now living with advanced cancer and has been undergoing chemotherapy. Along with telling her life story, Sarah wanted to use her book Hear Me Out to urge her fans not to wait to speak to their GP under any circumstances. She doesn’t want anyone to make that mistake."

Sarah revealed she is "fighting as hard" as possible in her cancer battle.

The 39-year-old pop star wrote: "Hi everyone. Thank you so much for all the messages of love and support that I've received since my last post. Everyone has been so kind and reading your comments and DMs has been such a huge source of strength to me. I can't deny that things are tough right now but I'm fighting as hard as I possibly can and being as brave as I know how."

Over summer, Sarah confirmed she had been diagnosed with breast cancer earlier in the year, which then spread to other parts of her body.

She said at the time: "There's no easy way to say this and actually it doesn't even feel real writing this, but here goes. Earlier this year I was diagnosed with breast cancer and a couple of weeks ago I received the devastating news that the cancer has advanced to other parts of my body.

"I'm currently undergoing weekly chemotherapy sessions and I am fighting as hard as I possibly can. I understand this might be shocking to read on social media and that really isn't my intention. But last week it was mentioned online that I had been seen in hospital, so I feel now is the time to let people know what's going on and this is the best way I can think of to do so."