Sarah Harding has reportedly been left terrified after undergoing tests to see if she has skin cancer.

The star should have been celebrating a stellar week after officially reuniting with her Girls Aloud bandmates on Friday, but was still reeling from a procedure to remove three moles on Wednesday.

Sarah underwent the procedure over fears the blemishes could turn out to be cancerous, according to The Sun.

A source told the publication, "This is an incredibly stressful time for her. It's early days and the doctors are very positive - but the word 'cancer' is terrifying to hear and Sarah is naturally stressing about it."

Her bandmates Kimberly Walsh, Cheryl Cole, Nicola Roberts and Nadine Coyle have rallied around their pal to ensure she doesn't stress out while awaiting the results.

The inside added: "The girls are completely behind her. Some of the fans have suggested she hasn't been enthusiastic about the tour, but the girls have told her not to stress because she'll only run herself down and make herself sick."

During the press conference, Kimberly told reporters how the girls were determined to look after Sarah, who had a tough 2011 after splitting from fiance Tom Crane and entering rehab.

The 'Strictly Come Dancing' star said: "It is important for us all to be there for Sarah, to put an arm around her and help.

"We all really noticed it when that daily business of being with each other was gone. We weren't there for each other every day."

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  • (From left to right) Cheryl Cole, Nicola Roberts, Kimberley Walsh, Sarah Harding and Nadine Coyle of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce will reunite for a tour next year.

  • Girls Aloud press conference - London

    (From left to right) Cheryl Cole, Nicola Roberts, Nadine Coyle, Kimberley Walsh and Sarah Harding of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce that they will reunite for a tour next year.

  • Girls Aloud press conference - London

    (From left to right) Cheryl Cole, Nicola Roberts (hidden), Nadine Coyle, Kimberley Walsh and Sarah Harding of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce that they will reunite for a tour next year.

  • Girls Aloud press conference - London

    (From left to right) Cheryl Cole, Nicola Roberts, Nadine Coyle, Kimberley Walsh and Sarah Harding of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce that they will reunite for a tour next year.

  • Girls Aloud press conference - London

    (From left to right) Cheryl Cole, Nicola Roberts, Nadine Coyle, Kimberley Walsh and Sarah Harding of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce that they will reunite for a tour next year.

  • Girls Aloud press conference - London

    Cheryl Cole of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce the band will reunite for a tour next year.

  • Girls Aloud press conference - London

    Nadine Coyle of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce the band will reunite for a tour next year.

  • Girls Aloud press conference - London

    Sarah Harding of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce the band will reunite for a tour next year.

  • Girls Aloud press conference - London

    Nicola Roberts of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce the band will reunite for a tour next year.

  • Girls Aloud press conference - London

    Kimberley Walsh of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce the band will reunite for a tour next year.

  • Girls Aloud press conference - London

    (From left to right) Cheryl Cole, Nicola Roberts, Kimberley Walsh, Sarah Harding and Nadine Coyle of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce will reunite for a tour next year.

  • Girls Aloud press conference - London

    Cheryl Cole (left) and Nicola Roberts (right) of girl band Girls Aloud arrive at a press conference at the Corinthian Hotel in London to announce the band will reunite for a tour next year.

  • Girls Aloud press conference - London

    (From left to right) Cheryl Cole, Nicola Roberts, Kimberley Walsh, Sarah Harding and Nadine Coyle of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce will reunite for a tour next year.

  • Girls Aloud press conference - London

    (From left to right) Cheryl Cole, Nicola Roberts, Kimberley Walsh, Sarah Harding and Nadine Coyle of girl band Girls Aloud at a press conference at the Corinthian Hotel in London to announce will reunite for a tour next year.

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  • Girls Aloud TEN album cover

    Girls Aloud TEN album cover

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    Girls Aloud

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    Girls Aloud arriving for the BRIT Awards, at Earls Court, central London, SW5.

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    Pop band Girls Aloud during their guest appearance on MTV's TRL UK at the MTV Studios in Camden, north London.

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  • T4 On The Beach - 2007

    WESTON-SUPER-MARE, UNITED KINGDOM - JULY 22: (L-R) Sarah Harding, Nadine Coyle, Nicola Roberts, Kimberley Walsh and Cheryl Cole of pop band Girls Aloud pose backstage at T4 On The Beach on July 22, 2007 in Weston-Super-Mare, England. (Photo by MJ Kim/Getty Images)

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