Welcome to the world of fatherhood, Nick Carter!

The Backstreet Boys singer and his wife Lauren Kitt Carter welcomed a baby boy into the world Tuesday.

Odin Reign Carter arrived after 30 hours of labor during a water birth at home, E! News confirms. "She had a very difficult labor," the source says. "It was hard on her. Of course, there was a happy ending!

Just a few short days ago, the new mom was more than ready to welcome her newborn. In fact, she expressed her hopes of having a natural birth close to home.

"We don't have a to-go bag because we are planning a home birth if all goes to plan," Lauren recently shared with E! News. "If [Nick] wants to film it, he can. I'm getting him a snorkel and mask."