Pregnancy and gestation can usually be hidden at least a couple of months after a woman discovers she is pregnant. For this reason, a pregnant woman always holds a slight edge in the information department over the father of the child in that she can generally control the time and place of The Reveal. Sometimes, though, she'll decide to simply not reveal at all. At least not right away. And often never, at least on purpose. The character in question has decided to have a secret pregnancy. Not to be confused with Hide Your Pregnancy, which is the meta version of this.