Megan Fox and Machine Gun Kelly are "very excited" to welcome their first baby together, a source exclusively tells PEOPLE. "They can't stop talking about the baby," the insider says.

Megan Fox and Machine Gun Kelly are having a baby! The actress, 38, in an Instagram post on Monday revealed she is pregnant with her fourth child, her first with Machine Gun Kelly, 34.

Megan Fox is pregnant. The actress took to Instagram on Monday to share that she is expecting her first child with Machine Gun Kelly after the couple suffered a miscarriage earlier in their relationship.

Megan Fox and Machine Gun Kelly are expecting a child together. The actress shared a photo on Instagram Monday to announce their news. In the photo, Fox appears to be covered in black ink of some sort as she cradles her baby bump. A second slide of the post showed a photo of her positive pregnancy test with the word, "Yes."

Since announcing their pregnancy, Megan Fox and Machine Gun Kelly have been nonstop talking about their exciting journey into parenthood.

Machine Gun Kelly joins The Voice as Gwen Stefani's playoff advisor days after he and fiancée Megan Fox announced they are expecting a baby together.