The singer said she was told just before she had to perform on stage.

Kelly Clarkson has revealed that her first ever Grammys was a stressful and scary time in her life. The singer was told by doctors that test results revealed she may have cancer just hours before she was set to attend the award show. This occurred at the 2006 Grammy Awards at which she won Best Female Pop Vocal Performance and Best Pop Vocal Album. The 34-year-old wasn't told until the next day that the doctors had made a mistake.

Speaking to Billboard's Pop Shop Podcast Kelly said: "Not many people know this —not to be a Debbie Downer— but I was told that morning that I had cancerous results for something.

"Here's the horrible part: I went the whole day crying. They redid my make-up like four times because I was like, 'Wow, so young.' I was just completely freaking out.

"Then when I won, I thought, 'Oh my God. This is like God giving me one more thing before something horrible happens.'

"I went to the doctor's the next day and they apologised for mixing up results. And I was like, 'Are you for real?!' I was like, 'You completely ruined my entire [experience].' The first time for an artist... as a kid watching the Grammys, that was a big dream!"

She went on to explain that although she was very happy she was annoyed about the mix-up.

"It was kind of the worst/greatest day. And the next day was also the worst/greatest day because I wanted to punch someone. I was like, 'Who mixes up results? Why wouldn't you test again?'

"It was very much a roller coaster ride, that day, for me. So, it's kind of unfortunate, but a lot of the moments got stolen from that mishap. But hey, I didn't have cancer!

"I don't really tell that story, because it's kind of a Debbie Downer, but that's the real story. You think it would've been the greatest night ever for an artist,

"And then it was like a joke... like, 'This is my last hurrah!' I was so dramatic about it because I was 20-something and scared. It was so weird. I don't even remember anything but being terrified."

You can see Kelly's win in the video below. The singer is seen sobbing and while we're sure it's largely because of her win, we now know what an emotional rollercoaster it must have been.

https://www.youtube.com/watch?v=prbGUcKQHCM https://www.youtube.com/watch?v=Hc6N3ajmD38