She's already the proud mum to two gorgeous boys Noah, three, and Bodhi, two, with her estranged husband Brian Austin Green.
And now Woman's Day Online can exclusively reveal the 29-year-old beauty is pregnant with another beautiful boy!
A source close to the actress has confirmed Megan is expecting her third son and she couldn't be more thrilled.
Meanwhile, Brian recently spoke out about the surprising new arrival.
“You know, nothing is planned,” he told People just a week ago. “None of them are ever planned. You kind of just go with it.”
“At my age, to be having three babies, is crazy. I’ll be 43 this year," he added.
Megan and Brian, who were married for five years, confirmed their separation after filing for divorce in August last year.
Despite the pregnancy, neither parent has commented on the current status of their relationship.
Sources close to the duo have revealed that the soon-to-be parents-of-three are hoping to work things out.
"Brian and Megan been working on themselves as individuals and things have gotten better between them as a couple," an insider told E!News.
"They have been getting along great. They are best friends and know each other very well," the source added.
In 2014, the actress candidly spoke about marriage and family to Men's Health.
"You can't live in a fantasyland and think that everything's going to be perfect all the time. You will go through phases where you're just not getting along."
"You're not communicating well. That's going to happen, and it's going to feel impossible to you sometimes. It might not even make sense to you sometimes. Arguments are normal," she said honestly.
Watch Megan talk about being a mum in the video player. Post continues below!
Megan might be pregnant but she’s not letting a bump come in the way of her job.
The starlet began filming for the new mobile game Stormfall: Rise of Balur. “She's just a general bad ass,” the 29-year-old star said in a behind-the-scenes video.
“I'm really excited to play the role. It's fun to play a very empowered, strong female character.”