Beyonce Knowles has fiercely guarded her privacy, but in a revealing new documentary, she opens up about every aspect of her life – from her struggles to stay current to very personal admissions about her pregnancy, sonogram and growing baby bump.

“People see celebrities and they have money and fame, but I’m a human being,” Bey says in the trailer of her film Life is But a Dream obtained by RadarOnline.com.

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“I cry. I get scared like everyone else.”

The 31-year-old superstar reveals what she thought when she found out she was pregnant, sharing the intimate sonogram of her daughter Blue Ivy Carter and telling the camera: “I just had a feeling that something was going on. Really. This is crazy!”

Beyonce says she was worried about hiding her belly but she wasn’t ready for the big reveal.

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“They keep putting me in these tight clothes and trying to hide it. It’s very difficult.”

Married to rap mogul Jay-Z and living a dream life as a mom to her daughter, Beyonce admits that she faces troubles in her life as well.

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“I always battle with how much do I reveal about myself? How do I stay current? How do I stay soulful?”

Watch the video on RadarOnline.com

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Life is But a Dream airs on HBO on February 16.