She also shared a snap of her positive pregnancy test, alongside the caption: “Nothing is ever really lost. Welcome back.”
Fans have sent well wishes to the A-list couple via social media, with one person writing: “Huge congratulations to them!”
Another adds: “Megan Fox and MGK are expecting! After everything they’ve been through, this is such a beautiful moment.”
“Her caption on the post, it’s beautiful to see them embrace this new chapter with such gratitude and resilience,” a third follower comments.
Fox previously revealed she’d suffered a miscarriage, which she spoke of in her book ‘Pretty Boys Are Poisonous.’
In an interview with Good Morning America, the Transformers actress discussed the toll it had on both her and MGK: “I’ve never been through anything like that in my life.
“It was very difficult for both of us, and it sent us on a very wild journey together and separately… trying to navigate, ‘What does this mean?’ and ‘Why did this happen?’”
Both Fox and MGK have children from previous relationships.
Fox shares three sons with her ex-husband Brian Austin Green, who she broke up with in 2020, while MGK has a 15-year-old daughter, Casie Colson Baker, with his ex Emma Cannon.
To everyone’s shock, Fox revealed the pair had called off their engagement in 2023 during an episode of the Call Her Daddy podcast.
“I can’t say for sure what the capacity will be, but I will always be connected to him somehow.
“Beyond that, I’m not willing to explain.”
So as their relationship has been on the down low, everyone has been left asking the same thing following Fox’s pregnancy announcement.
Confused, one social media user questions: “Didn’t they break up?”
Another asks: “They’re still together?”
Somebody else says: “Why did I think they broke up?”
One source previously told Us Weekly: “Megan and Colson have had a very up-and-down relationship. They are great one day and then fighting with each other the next.
Meanwhile, another insider told Entertainment Tonight: “They are continuing to go to therapy, be fully transparent with each other about their feelings, and have consistent communication.”