For the past two years, Thomas and Nancy have been trying to have a child.
"You heard me right, Thomas is a pregnant man," Oprah says.
So far, Thomas says no one in their community knows he's pregnant -- except medical doctors.
"I think that people will be shocked because no one's ever heard of a man giving birth before," Thomas says.
"I think the world is taking it all in," Oprah says hesitantly.
Exploring his life
"I realized I wanted to be free again," he says. "I didn't want to see the world as male or female."
Over the years, Thomas ended up taking testosterone to help him become more masculine.
When he met his wife, he was still Tracy, legally a woman.
"Sexuality is a completely different topic than how you feel as a gender," Thomas says. "When I woke up in the morning, I felt like a man."