Jamie Lynn Spears Pregnant With Second Child -- Report

Jamie Lynn Spears is pregnant with her second child, according to US tabloid reports.

The 17-year-old sister of Britney Spears gave birth to her first child, Maddie Briann, on June 19.

And Jamie is desperate to keep the news of a second pregnancy a secret, reports the National Enquirer.

A source tells the publication, "Jamie Lynn is about eight weeks pregnant, and she and her mom Lynne are hysterical.

"Neither of them knows what to do, but for now they're trying to keep the news from getting out.

"Jamie Lynn believed she couldn't get pregnant while she was breast-feeding.

"She'd expected to have her period by early September, but a home pregnancy test came back positive and Jamie Lynn cried her eyes out.

"Lynne was livid when she found out."

The source adds, "Everyone has reminded Jamie Lynn how much trouble she had adjusting to motherhood with Maddie, and pointed out that having a second baby now would only be a recipe for disaster."