EXCLUSIVE: Renewed fears over Cheryl Cole's health after friend Derek Hough reveals she has 'fluid on the lungs' Read more: http://www.dailymail.co.uk/tvshowbiz/article-1293283/Cheryl-Cole-fluid-lungs-reveals-Derek-Hough.html?ito=feeds-newsxml#ixzz0tC20BeIK

American - who travelled with her to Tanzania, where she picked up the potentially fatal tropical disease - has been visiting Mrs Cole regularly since she fell ill.
On Wednesday, he was overheard discussing Mrs Cole's plight by another hospital visitor, who said afterwards: ‘I’ve seen Cheryl’s mum and Derek in there. They stayed overnight last night. I overheard Derek on his phone saying she's got fluid on her lungs.’
Last night, a close friend of the singer's told the Mail: 'She has got fluid on the lungs. She's not good, no. She's still in intensive care so it doesn't look like she'll be out of hospital for a while yet.'
Friends of the singer admit they now 'don't know' when she will be out of hospital.
Dancing On The Stars winner Hough is said to be feeling incredibly 'guilty' because it was his idea for the pair to go to Tanzania, where she is believed she was bitten by the infected mosquito.