Beyonce Knowles fuels pregnancy rumors

Beyonce Knowles has fueled rumors she's expecting her first child with new husband Jay-Z

The 'Crazy In Love' hitmaker -- who married the '99 Problems' rapper in a secret ceremony on April 4 -- is said to have gained a considerable amount of "pregnancy weight" that she isn't bothering to try and lose.

A source told the New York Post: "She has gained a lot of pregnancy weight.

"When she gains weight, she normally does the Def Jam detox, but not now."

A rep for Knowles said: "I don't know if she's pregnant. Let me perform an ultrasound and get back to you."