For some parents it can be difficult to decide how many children to have or more specifically to know when your family is complete.

Mum-of-three and actress, Kate Hudson is currently wrangling with this dilemma. Kate and her partner, Danny Fujikawa, welcomed a baby girl, Rani Rose in 2018. Kate also has two sons from previous relationships, Ryder Russell, 16 and Bingham Hawn, eight.

“I don’t know if I’m done yet,” revealed Kate during an appearance on The Ellen DeGeneres Show.

Kate’s reason for not knowing if she’s done with having babies is one many mums of toddlers can relate to.

“Right now, Rani’s in that place where you’re like, ‘I want another baby,’” she explained.

“But once she gets like four, five, you’re like, ‘I feel like my life is kinda back a little bit. They’re kind of in a groove.’ There’s, like, a window.”

And it’s true there is a window. For some parents as their child begins to move out of the toddler stages it can be tough to consider going back to the newborn stage. The night feeds, the sleeplessness, the constant nappy changes and so on.

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Kate’s currently deciding if she wants to have baby number four.

Kate, 40 appeared on Ellen alongside her brother, Oliver Hudson to promote their new podcast, Sibling Revelry.

During the chat the two spoke about their family size and having three children each with Kate joking she may just have another child to “win”.

“He raises children really easily. It’s his best work, he’s the best dad,” the Almost Famous star says of her brother, who is a dad to Wilder, 12, Bodhi, nine and Rio, six.

“I have a feeling I’m probably going to end up winning,” she said, adding that she’s not sure she feels done at three kids.

Oliver admitted he wasn’t in the race if his sister chooses to have another child as he’s not in “the window”, meaning his children are way out of toddlerhood.

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So, how do you decide if you want another baby?

According to experts, it’s better for your health to recover from one pregnancy and childbirth before embarking on the next. Experts recommend at least six months, but preferably a year.

Research shows it may be better for your baby, too. Compared with a longer gap, babies conceived within six months of a previous pregnancy are at higher risk of premature birth, low birth weight and the baby measuring small. The risks are lower for babies conceived between seven and 17 months after the previous birth. The risks start to increase again for gaps of more than five years.

Age is also factor for women who are planning to have another child. For example, if you’re 38 years old and you want two more children, your decreasing fertility may not give you the time to space the age gaps of your children.

Statistics and research aside, emotionally knowing when you’re done can be difficult for some. You’ll either need to make a decision to follow your heart, which might be saying  “go on, have another” or listen to your head which may be saying for a variety of reasons, it’s time to stop, your family is complete.