Jermaine Dupri has denied reports that Janet Jackson is expecting a baby.Celebrity bloggers including Perez Hilton suggested that the singer's recent bouts of illness may be linked to a pregnancy.Joking about the rumors, Dupri, 36, told Us: Does Perez know that lying destroys the credibility of a blogger?However, the couple have not ruled out starting a family in the future.I would love to have chil