The 32-year-old is positively growing and is taking a significantly more relaxed approach to pregnancy the second time round.
Mila chatted to US breakfast show Live with Kelly to promote her new comedy Bad Moms.
Of course attention quickly turned to focus on the starlet's personal experience to being a mum to 21-month-old daughter Wyatt Isabelle with husband Ashton Kutcher, while expecting baby number two.
Check out her chat in the video player below... Post continue!
“The other day, someone asked me how far along I was and I was like, ‘I have no idea,’ ” she laughed.
“I was like, I can tell you when I’m due, and then I can do the math backwards.”
Mila seems to be at ease as she awaits for her baby.
“With [my first pregnancy], I could tell you precisely what she was developing, and what stage it was … but [with] the second one, I’m running after a toddler or I’m working, so I’m like, ‘Oh that’s right, I’m pregnant,’ ” she admitted.
Ashton's wife also revealed her latest flick was her first project between babies one and two.
"[This is] the first time that I’ve ever left my daughter for three days. It’s rough," the pretty brunette admitted.
"I have a thing called Nest Cam in my family room, so I totally spy on my kid eating breakfast.”
Adding, “And then I talk to her and she thinks Mommy lives in a camera, which is frightening and horrible anyway. But it’s rough. It’s hard being away from your kid."
The That ’70s Show actress also opened up about her current cravings - eggs, which she joked she could "eat all day!"
Unfortunately the same couldn't be said about meat.
“I can’t eat meat. It’ll look delicious to me, and I’ll take a bite of it and I’ll be like, ‘Uh-uh. Can’t do it,’ ” the mum-of-one explained, adding that ground meat, like a burger, is completely fine while a whole piece of meat like a steak isn’t.