Credit: courtesy of Parade Magazine; Jason Merritt/Getty Images

Biggest Loser trainer Jillian Michaels admits that being constantly teased about her appearance led her to go under the knife.

"In eighth grade, I weighed 175 pounds and my nose was the size of a softball," Michaels, 36, tells the new issue of Parade's Healthy Style. "Once, I was sitting at lunch and got surrounded by a bunch of kids who let me have it about how ugly I was -— my unibrow, the size of my nose, the fat rolling over my jeans. It was pure hell. My mom had to pull me out and put me in another school."

To stop the bullying, Michaels decided to do something about it: she underwent a rhinoplasty to shape her new nose.

"I had my nose done," she admits. "I felt much better about myself. Plastic surgery is a very personal decision."

Though she doesn't specify when the procedure occurred, she admits that the cosmetic surgery alone didn't help her find the confidence she'd been searching for. Inside the mag, Michaels -- whose new show, Losing It With Jillian, premiered in June -- also reveals that she's been in therapy since she was 5 years old.

"I was a very anxious kid. I had night terrors. I couldn't breathe," she says. "I had a very strained relationship with my father, especially when my parents got divorced. I still try to go to therapy at least twice a week. It has given me the confidence to pursue the things I love, and it’s important that I don't end up playing out my own pain and insecurities with the people I'm trying to help."

But now that she's finally at peace with herself, the 5-foot-2, 120 pound exercise fanatic says she's eager to start a family -- even if that means doing it alone.

"I'm hoping I'll have the motherhood thing figured out within five years. I was an only child for a long time, and it was lonely, so I would like to have at least two kids," Michaels says. "As long as children have love, that's all that matters, but in an ideal scenario I'd want them to have a father."