ovarian cancer ovarian cancer Cobie Smulders Opens Up About Having Ovarian Cancer While Filming 'How I Met Your Mother' She was just 25 when she was diagnosed. They Told me I was Pregnant, But it was Ovarian Cancer You're bloated. You need to pee all the time. It could be pregnancy—or it could be ovarian cancer, the so-called silent killer. But new research shows you can spot this cancer early. These two survivors reveal how pushing for a diagnosis can save your life. By Meryl Davids Landau Published 11 June 07