Is Blue Ivy about to become a big sister?

According to a new report, Beyoncé is pregnant with her second child after several rounds of IVF treatments!

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Bey and Jay out and about on July 28.

“Even though she’s barely showing, she’s paranoid that someone will pick up on it, so she’s hiding her stomach whenever she goes out,” a source tells OK! magazine about the 33-year-old, adding that the singer and her hubby Jay Z, 45, don't want to jinx it by telling everyone before the three-month mark.

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Her feelings are understandable given that the Grammy winner suffered a miscarriage before welcoming her daughter in 2012.

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The insider adds, "They’ve been trying for a while, and it was so hard when it wasn’t happening. They both desperately wanted another child and feel so lucky."

And, when the time comes, they're planning to include Blue Ivy in the big announcement. "They’d love to involve Blue, because they know how much she wants a little brother or sister,” the source says.