Sarah Palin 'Devastated' by Bristol's Pregnancy

Sarah Palin confesses she was shocked and 'devastated' by Bristol's pregnancy

Former Alaskan governor Sarah Palin tells Barbara Walters that she didn't know her eldest daughter Bristol was sexually active before learning about her pregnancy.

"That's why it was shocking" Palin admitted. "Truthfully, we were devastated."

Find out what Palin has been up to since losing the Republican Vice-Presidential nomination

The five-part series of ABC News interviews is scheduled to begin airing on "Good Morning America" Nov. 17, the same day Palin's memoir "Going Rogue: An American Life" is released.

In Sept. 2008, the Palin camp announced that Bristol, then 17, was pregnant and she would marry the father, Levi Johnston.