Nick Cannon claims he and wife Mariah Carey 'never thought' about adoption.

The couple – who married in April 2008 – are believed to be expecting their first baby and though the rapper-and-presenter refused to be drawn on the speculation, he admits he and the singer would love to have a child of their own.

He said: 'I've never really thought about adopting. That's never really come up. But marriage, you want to have a family, that's one of the reasons to get married. When the timing is right.'

Nick also claims he hasn't 'thought about' what would be the most exciting aspect of fatherhood.

He added to America's OK! magazine: 'What would excite me? I don't know. Those are deep questions. I haven't thought about those questions yet.'

The 29-year-old star has also promised fans that he and Mariah will reveal their baby news themselves, rather than allow friends to tell people.

He said: "If and when my wife is ready to make any announcements about private matters she will do it personally."

A source claimed yesterday (02.06.10) that Mariah – who recently pulled out of a movie on medical grounds – is pregnant but trying to keep the news under wraps.

The insider said: "They're both very excited and very happy.

"Mariah and Nick want to keep the pregnancy quiet as long as they can."