The 35-year-old singer and reality star already has daughters Phoenix, 12, and Angel, three, from previous relationships, and husband Stephen Belafonte's has six-year-old daughter Giselle.
But Mel said the she now wants them to try for a baby of their own.
She told Reveal, 'I'm always broody. Hopefully, I'm going to be pregnant by the end of this year, or, if not, next year. I love kids.'
Talking about her marriage, she said that friendship is the key.
'I married my best friend. We've been mates for ten years,' she said.
'It was never awkward because we knew each other so well. I can see how it could be awkward, but for us it was just funny.'