Tiffany Fallon, Playboy model and wife of Rascal Flatts’ Joe Don Rooney, says that she kept her newly pregnant status a secret from producers of Celebrity Apprentice because she "didn’t want it to be held against me or for it to help me."

While shooting the show, Tiffany was about two-months along, and she suffered from persistent morning (and night!) sickness that lingered until very recently. Tiffany, 33, says she is due in May and will learn the baby’s sex during an ultrasound scheduled for next week. Competing on Celebrity Apprentice wasn’t the only big undertaking of Tiffany’s first trimester, however. In November she posed for the cover of the February issue of Playboy, again keeping her pregnancy a secret.

Tiffany adds,

Celebrity Apprentice debuts tonight on NBC.