Nicole Kidman has slammed media reports that she is pregnant - again. The Oscar winner says she has no idea how or why the rumors get started, and insists, "No, I am not pregnant. One minute I'm being told I'm too thin, the next I'm told I'm fat and it must be because I'm expecting a baby. It's very confusing. My mom rang me up and said, 'Are you pregnant?' And I said, 'No, Mom, you'd be the first to know.' And we just laughed about it because there's not much else you can do."