Beyonce's documentary "Life is But a Dream" debuts this month and reveals many of the singer's deepest and most private moments -- including her denial that she used a surrogate for her pregnancy.

"To think that I would be that vain," Beyonce says in a clip from the film. "I respect mothers and women so much. To be able to experience bringing a child into this world, if you're lucky and fortunate enough to experience that, I would never ever take that for granted."

Beyonce recently open up about the miscarriage she had before giving birth to Blue Ivy. In "Glory," a track Jay-Z penned in his daughter's honor, he references the tragedy. This, however, is the first time Beyonce has addressed the miscarriage directly.

Still, pregnancy was obviously a positive influence on her life.

"My baby was born out of a conflict in my life and that struggle had to be settled," the "Halo" singer said. "I wouldn't have gone through the pain if I hadn't gone down the path. There's something so relieving about life taking over you like that. You're playing a part in a much bigger show and that's what life is, it's the greatest show on earth ... I felt like God was giving me a chance to assist in a miracle."

Despite her many accomplishments and star-studded career, the Grammy winner still cites motherhood as the most important thing she has yet to undertake.

"It's the most powerful thing you can do in your life -- and especially after losing a child, the pain and trauma from that just makes it mean that much more ... A child, you don't play around with that."

It's been a busy year already for Queen Bey. Facing criticism over lip syncing the National Anthem at the Presidential Inauguration, she sang it live at a press conference yesterday. She'll also perform at the Super Bowl this Sunday (Feb. 3).

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