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
Music - MTV TRL UK
Girls Aloud
BRIT Awards 2009 - Arrivals - London
Girls Aloud arriving for the BRIT Awards, at Earls Court, central London, SW5.
Girls Aloud on MTV TRL UK
Pop band Girls Aloud during their guest appearance on MTV's TRL UK at the MTV Studios in Camden, north London.
Kilimanjaro celebrities visit 10 Downing Street
The Great Red Nose BT Kili Climb celebrities visit 10 Downing Street to meet the Prime Minister following their climb up Africa's highest peak to raise money for Comic Relief.
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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WENN | Posted: 23/10/2012 06:56 BST Updated: 23/10/2012 08:17 BST