Beyonc Knowles remains "conscious" about what she eats despite her pregnancy cravings.

The 30-year-old songstress is currently expecting her first child with her husband Jay-Z.

Although she is now eating for two, Beyonc is not forfeiting good dietary habits.

"I've been really conscious about food," Beyonc told Katie Couric on American news programme 20/20 on Friday.

"I've been trying my best not to lose control."

After her baby is born, Beyonc wants to get back into shape quickly. She does not want to endure a lengthy struggle with eliminating baby weight.

"Because I've met so many people that say, 'My second baby, my third baby, I've learned my lesson,'" she explained. "So I haven't been going crazy. I know it's important that I don't lose myself."

Jay-Z and Beyonc have been wed for three years. The Grammy-winning singer is elated that her personal life is blossoming.

"It's exciting! I know it's gonna be difficult at times. I know that, like my mother, I'm gonna get on my child's nerves [but] I'm just ready! I'm ready for the next chapter."

Beyonc and Jay-Z are thought to be welcoming their newborn early next year.