Janet Jackson expecting first baby

Janet Jackson is pregnant with her and husband Wissam Al Mana's first child, E! News has learned.

The news comes about a month after the 49-year-old pop star announced she was stopping her Unbreakable world tour because she and her husband "are planning our family." She added she had to "rest up—doctor's orders" but did not specify if she was expecting a child, if she and Al Mana were trying to conceive or if they planned on adopting.

A source told E! News Wednesday Janet is in her second trimester of pregnancy and that she and Al Mana have been working with a fertility specialist for a while.

The singer's rep has not commented. Janet's baby news was first reported by ET.

It is extremely rare for women Janet's age to become pregnant naturally. Those that do conceive typically do so via IVF, using their own eggs they had had frozen during their childbearing years, donor eggs from younger women or embryos made from donor eggs.

Janet and Al Mana, a 41-year-old Qatari billionaire and businessman, wed in 2012.