The 'Transformers' star is married to Brian Austin Green. The couple became proud parents to Noah last September.
Fox, 26, says having a baby was her life's dream and her priorities have changed post motherhood, the Daily Mail reported quoting Marie Clair magazine.
"I recognise the blessings when they come... The ultimate satisfaction for me is being with my son. All I wanted to do my whole, whole life was have a baby and, now, I've finally done it. I just want to give Noah as much of myself as I can. And I want to have more kids. That is where my heart is," Fox said.
The actress, who is currently promoting her new film This Is Forty, says acting doesn't really feel like her role now she is a parent.
"It's very hard for me to do this stuff, because I feel like this isn't my job any more. My job is to be with him."
Talking about her marriage to the former '90120' star, Fox said, "I just think we got lucky. I believe he's my soulmate. But that doesn't mean it doesn't take work, because we are very, very different...
"He really is amazing. I should never, ever even think about complaining."