Actress Sofia Vergara says she is unlikely to have children 'naturally', adding that if she and her husband and actor Joe Manganiello decide to expand their family, they will have to opt for a fertility treatment.

The 43-year-old actress, who already has a son with her ex-husband Joe Gonzalez, opened up about her personal life while talking to Harper's Bazaar Arabia magazine, reports femalefirst.co.uk.

"I cannot just expect anything natural anymore. We'll see what happens. It's not something that doesn't let us sleep. But it's not something I am completely opposed to," Vergara said.

The `Modern Family` star is grateful that her son Manolo was always such a good child as he made life as a working single parent easier for her.

She said: "I was a single mom for a long time and he always supported and helped me, made it easy to be able to work. I never had to worry about him. When you have a problem all the time, you are unable to be creative and think. As a single mother, I was able to do everything I wanted to do."

Vergara previously admitted that having children with Manganiello, whom she got married to last year, wasn't a priority in their relationship.