Nicki Minaj will be disappointed in herself if she never has a baby.

The 31-year-old rapper has revealed she is desperate to give birth and is scared it won't happen because of her hectic schedule.

Questioned on her biggest fear in life, she admitted: ''That I'll become so consumed with work that I'll forget to live my personal life to the fullest.

''If I'm done with my fifth album and I don't have a child by then, no matter how much money I have, I would be disappointed, as a woman, because I feel like I was put here to be a mother.''

The 'Anaconda' singer split from her boyfriend of 14 years, Safaree Samuels, earlier this year, but is already looking towards settling down with another partner - which could be her current beau, music video director Grizz Lee - and having kids.

She continued: ''I always said, 'When I have my baby, it's going to be all about my baby,'

''I don't want the child feeling like they don't have all of my attention, so I always said, 'I'm going to take a little break [from music].'''

Although the musician - who will release her third album, 'The Pinkprint,' in December - ended her relationship with Safaree by smashing up his car with a baseball bat, according to gossip website TMZ, she is now coming around to the idea of being in a marital relationship.

She told Complex magazine: ''I have definitely put off the wife thing because I don't want people in my business. I'd rather not do anything that's going to be on paper but I definitely will be married before I have my baby.

''I want to make sure I do it in that order. I've always felt like that since I was young; my mother always put that in my head. By the fifth album, I will have walked down the aisle and I will at least be on baby number one, possibly baby number two. And have $500 million.''