Jaycee Dugard reveals story

Diane Sawyer (left) of ABC News speaks with Jaycee Dugard in Ojai, Calif., during her first interview since being kidnapped near her California home in 1991.

LOS ANGELES -- Kidnap victim Jaycee Dugard says she didn't know she was pregnant when she gave birth to her first child.

Dugard had been abducted by Phillip and Nancy Garrido when she was 11, handcuffed, raped and imprisoned for 18 years. Now 31, she is telling her story in the memoir "A Stolen Life" and in an exclusive interview with ABC News' Diane Sawyer.

"Now I can walk in the next room and see my mom," Dugard said in her first interview. "Wow. I can decide to jump in the car and go to the beach with the girls. Wow, it's unbelievable, truly."

Dugard told Sawyer how she gave birth to her first child, Angel, at 14 in the Garridos' deranged backyard. Angel was the first of two children she had with Garrido. "I didn't know I was in labor," she said. "I was still ... locked at that time. Just scared."

The full interview will air at 9 p.m. on "Primetime" Sunday night locally on WCIV.