Gwyneth Paltrow claims she is past "the baby phase".

The actress feels she has left it too late to have another child and can't face going back to the days of changing diapers. Gwyneth has two children with husband Chris Martin - Apple, eight, and Moses, six.

The 39-year-old star admitted she is unsure whether there will be any further additions to their family.

"I don't know if I can go back to diapers. I don't think so. I would love to, but I sort of feel like I don't know if I can go back to diapers and things like that. I'm so past that, I think I may have missed the window," she is quoted as saying by British newspaper The Daily Mail. "I think if maybe when Moses was three, I would have done it, or four even, but now he's six and such a guy, I feel like I'm out of the baby phase. If it happens, it happens."

Gwyneth admitted that running the Paltrow-Martin household is challenging, with two busy careers to juggle and two kids to raise. The blonde beauty explained that she tries not to overload her schedule to avoid burn-out.

"I find that I get stressed out when I try to do too many things at once, and so I try not to. I feel very stressed out if I'm trying to cook and help the children with their homework and answer emails and talk to my lawyer or whatever," she said. "I feel really overwhelmed. So I try to just do things one at a time."

But Gwyneth added that her family and husband make her truly happy.

"I feel like motherhood has given me all my happiness and a real life: a husband, my children and everything that's invested in that. Every woman is different, but for me that's where I've gotten my real happiness," she explained.