Jamie Lynn Spears shocked the world when she announced she was pregnant at 16, promptly quitting her burgeoning career and disappearing back to Louisiana to concentrate on raising her baby girl.

Now a 21-year-old parent to daughter Maddie, Jamie Lynn opens up to Glamour magazine about becoming a teen mom, how she worries she is not a good parent and how scared she was to ask for birth control before getting pregnant.

"I believe in safety and birth control as prevention," Jamie Lynn says, referring to when she started having sex with Casey Aldridge, the father of her daughter. "But like many young girls...I was really scared to go to the doctor. And I was on a Nickelodeon show, and it [felt] especially embarrassing to ask someone to put me on birth control. I didn't want to ask my doctor, because she had a little girl."