NEW YORK - MARCH 25:  Amy Robach of NBC News attends the NLGJA's 15th Annual New York Benefit at Mitchell Gold & Bob Williams SoHo Store on March 25, 2010 in New York City.  (Photo by Andy Kropa/Getty Images) Amy Robach got a mammogram on air. Credit: Andy Kropa/Getty Images

 

"If I got the mammogram on air, and it saved one life, then it's all worth it," Amy Robach said. "It never occurred to me that life would be mine."

 

But it was. "Good Morning America" correspondentAmy Robach got a mammogram on the air six weeks ago as part of Breast Cancer Awareness Month. Robach, at age 40, had never had a mammogram and was "putting it off," she said, because she was so busy with her career and family.

 

She agreed to stop procrastinating and undergo the exam on air to encourage other women to do the same. Unexpectedly, doctors called her in for further tests. On Nov. 11, she announced on GMA that she's been diagnosed with breast cancer.

 

Robach, who's married to actor Andrew Shue, says telling her two children and three stepchildren was the hardest part. She doesn't yet know the extent of her cancer, but she's decided to have a bilateral mastectomy.

 

"You're going to beat this," her GMA colleagues told her.