Sofia Vergara sounds off on embryo controversy: We signed a contract (audio)

Sofia Vergara is firing back at her ex-fiancé in the wake of his New York Times op-ed, in which he argues that Vergara should allow him to bring their fertilized embryos to term despite their break-up.

Vergara went on Howard Stern's radio show Monday morning, saying, "A child needs a mother. More than a mother, it needs a loving relationship of parents that get along, that don't hate each other ... I wouldn't imagine anyone saying to bring to the world kids that are already set up everything wrong with them (sic). It would be so selfish."

"The thing is this, fortunately and unfortunately there is law," Vergara explained. "You sign legal papers. If it was so serious for him this issue, which I totally respect that it's serious for someone, then you should have taken it more serious like I did."

Read MoreSofia Vergara's Ex-Fiance Pens Bitter New York Times Op-Ed About Embryo Feud

"There is a contract. He can't do anything. We wrote what we wanted at the time. It's not like a contract that they give right there the moment they take your eggs out. And not only that, we did it two times. You make the mistake the first time, but then a year later when you're going to get another retrieval or another fertilization, you say 'Wait a minute. This time I want to do it this way.' But two times? Suddenly now you want to change your mind?"

In his op-ed, Vergara's ex Nick Loeb wrote, "When we create embryos for the purpose of life, should we not define them as life, rather than as property? A woman is entitled to bring a pregnancy to term even if the man objects. Shouldn't a man who is willing to take on all parental responsibilities be similarly entitled to bring his embryos to term even if the woman objects?"

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