Megan Fox is expecting her third child!

The 29-year-old actress debuted her baby bump at CinemaCon in Las Vegas on Monday while promoting her upcoming film "Teenage Mutant Ninja Turtles: Out of the Shadows" with co-star Will Arnett. While Fox did not announce that she is pregnant, it was very obvious as her growing belly was visible in her black bodycon dress.

Multiple sources have confirmed that she expecting her third child, but she has yet to reveal who the father of this baby is. Fox and her estranged husband Brian Austin Green are already parents to sons Noah Shannon, 3, and Bodhi Ransom, 2, but since the two recently announced their divorce, it is unclear if he is the father.

Despite not speaking about the baby daddy, Fox did admit that filming the movie while pregnant hasn't been easy. "I'm always in the process of having a baby and looking like I didn't have a baby," she said at the event. "I was training. There was no access to healthy food on the set so I ended up losing weight because I was hungry all the time."

While the upcoming second installment to the "Teenage Mutant Ninja Turtles" movie may seem kid-friendly, she has revealed that she does not let her kids watch her movies.

"Noah is too young and I try to keep them from television and movies for the most part. I think any sort of screen-whether it's television, iPad or iPhone-is really bad for their brain development so I try to remove that from their lives," she explained. "And I also want to deter them from ever being on social media because I think it's detrimental to a child's self-esteem. I have lots of opinions on this. I do let them watch Pixar movies. We do stuff like that. We watch 'Peter Pan' together. They have no idea what I do. Somebody at their school will tell them eventually but then it won't mean anything because they've been around it their whole lives so they'll be like okay. I'm still embarrassed of my mom."

Fox and Green split in August 2015 when she filed for divorce after five years of marriage, citing "irreconcilable differences." The two have been spending a lot of time together recently with their kids, though, and the divorce is still pending, so there's a good chance he's the father. Fox has opened up in the past about her marriage to the former "Beverly Hills, 90210" star and how she does believe they are meant to be no matter what may happen between them.

"Arguments are normal. You have to be patient and sit through that and remember that this is a part of human communication and interaction," she said in 2014. "Brian is my soul mate. I happen to believe that. He's definitely the father of my children. That makes it easier for me to work through things, because I always see the spiritual side of things. I look at the end game."