If reports got it right, it seems that Mila Kunis is already past her due date. What's causing the delay?

No one really knows for sure, but the wait is reportedly putting Mila and fiancé Ashton Kutcher at the edge of their seats. And it looks like Ashton is the more nervous one between them.

A source close to the couple told People magazine, "He is a nervous wreck. They were hoping the baby would come this week because he's on hiatus [from his show Two and a Half Men]."

"He is incredibly excited for the baby. Mila just wants the baby to come out already!" Added the source.

Mila has already traded her Pilates and spinning classes for short walks because of her growing baby bump. And while it may be hard for her to be her usual active self, Ashton saves the day by doing the dirty work for her.

Ashton does errands alone so pregnant Mila can stay home. He seems to take great care of her," added the source.

And it seems that dad-to-be Ashton is the one who's really excited to meet their baby girl. In an interview, co-star Jon Cryer shared, "Ashton has been excited every time we had a child actor on set. He loves kids and could not be more stoked to have a child."

The "That 70s' Show" co-stars broke Mila's baby bump news earlier this year, and soon after their engagement. The pregnant Mila and fiancé Ashton plan to get married after giving birth.

The two have also recently purchased a 7,351-square-foot mansion in Beverly Hills for $10 million.

Their new house reportedly "sits on about a half-acre of land in the hills and boasts four bedrooms and three bathrooms, and it offers plenty of privacy."

Stay tuned for more Mila Kunis baby news right here!