Evangeline Lilly only gave birth four months ago but says she would love to be pregnant again if it wasn't for her working commitments.
Evangeline Lilly already wants another baby.
The actress - who has not disclosed the name of her four-month-old son - is currently busy filming `The Hobbit' but admits if she wasn't working, she would love to have another child with boyfriend Norman Kali.
She said: "If I wasn't working right now, I'd probably be pregnant again!"
The 32-year-old beauty says motherhood was a long-held dream for her and she is thrilled to find it as enjoyable as she had hoped.
She told Us Weekly magazine: "My son is wonderful. He is amazing. Motherhood is a joy! I have dreamed about being a mother since I was 12 years old and there's nothing disappointing about it.
"It is actually more incredible than you can imagine. I think everything I say about motherhood sounds so cliche, but it's true."
Evangeline also joked that she spends all her spare time feeding her son.
She said: "All he does is eat all day."
The former `Lost' star has previously claimed she only wanted to have one biological child and then planned to adopt.
She has said: "For a very long time, I have had intentions to adopt. We have a huge population problem on Earth. We're not going to protect the Earth the way we need to protect it if we don't stop making so many babies. I think I can allow myself one child - and from then on, I think I would have to adopt. It makes sense not to add to the population problem."