Jill Scott: Preggers!

By simply walking on stage to promote her new HBO series "The No. 1 Ladies' Detective Agency" at the Television Critics Association conference Friday, star Jill Scott revealed she is six months pregnant with her first child.

The film, due to premiere on the network in March, is based on the best-selling novels by Alexander McCall Smith and was filmed entirely on location in Botswana.

"The first trimester I spent in Botswana," said Scott, who is due April 25. "That was one of the biggest challenges of my life. First trimester! You're sick every morning. It was seven hours time difference, the heat, the bugs, the 14 hour days."

Still, the actress, who is engaged to drummer Lil' John Roberts, says she's glad she went through with the plans to film. "My doctors gave me a clean bill of health and said you can do this, so I did it."

Scott, 36, is a three-time Grammy Award winner and was previously seen on the big screen in Tyler Perry's 2007 film "Why Did I Get Married?"