The 43-year-old superstar singer, who appeared on a TV show, was asked by a fan caller whether or not the couple was planning to expand their brood, reported E! online.
But Carey is not up for it.
"If Nick could have the babies himself, then yeah, bring 'em on. We love kids. Here's the thing: This is real. I'm responsible for the kids for like forever. I look at it like, they didn't ask for this lifestyle but here they are," she said.
The star shared that she had to suffer some health problems during her pregnancy, including preeclampsia and gestational diabetes, and does not want to go through that again.