Redknapp, who is mum to Charley, 11, and Beau, seven, with her husband Jamie, said she is “more than happy” with her two boys.
She admitted to thinking it wasn’t even possible to have children at all, due to suffering from endometriosis. The condition, where the tissue that behaves like the lining of the womb is found outside the womb, causes fertility issues in women.
The mum-of-two has previously opened up about her struggle to conceive.
“I put it to the back of my head and blocked it out; I thought it’s nothing, it sometimes takes a long time,” she told PEOPLE in 2008.
“People tried to talk to me about it, but I convinced myself that I was having a great life and it wouldn’t be the right time to have a baby anyway.
“So I never went through that whole thing of investigating it or looking for alternative treatments. It was Jamie who said let’s find out what’s going on here.”