updated 01/14/2013 AT 11:00 AM ET
•originally published 01/14/2013 AT 11:30 AM ET
She’s one of the world’s top pop stars, but even Beyoncé has her occasional moments of self-doubt.
“People see celebrities and they have money and fame, but I’m a human being. I cry, I get scared, I get nervous just like everyone else,” the singer, 31, admits in a newly released trailer for her upcoming HBO documentary, Life Is But a Dream, airing Feb. 16.
That’s just one of many confessions she has. Knowles, who welcomed her first daughter Blue Ivy with husband Jay-Z last January, also shares the sonogram and reveals how she found out she was pregnant.
“I just had a feeling that something was going on,” she says. “Really, this is crazy.”
Beyoncé tells how hard it was to keep news of her pregnancy a secret before famously unveiling her baby bump to the world at the MTV Video Music Awards in 2011.
“They keep putting me in these tight clothes and trying to hide it, it’s very difficult,” she says, while showing off her growing bump. “I don’t know how I’m going to do this.”
The new year is already off to a hot start for the new mom. After singing the National Anthem at President Obama’s inauguration Jan. 21, Knowles is set to perform at the Super Bowl half-time show, which will feature the first reunion of Destiny’s Child since 2007, on Feb. 3. The group will also release a greatest hits collection, Destiny’s Child – Love Songs on Jan. 29.