In 2017, Chrissy Teigen went public with her experience with postpartum depression in an essay for Glamour . Now, the model and cookbook author is continuing to share her story in hopes of tackling the stigma surrounding the condition and maternal mental health.

In an interview with the Today show Thursday morning, Teigen opened up about the postpartum depression she experienced after her first child, Luna, was born.

I just didnt know that there was any other way to feel. I thought it was very natural to be in this low, low point. And I just assumed that was motherhood ... and you just kinda went through it, she said.

Teigen said that after her friends and family told her they noticed distinct changes in [her] personality, she sought treatment.

I had really changed, she said. It wasnt just being tired. It was being really, really sad and hard on yourself and really down on yourself. It wasnt just the blues. A lot of us just think its the baby blues.

Teigen appeared on Today to promote her partnership with Allegheny Health Network , a medical system throughout western Pennsylvania, and its womens health program AHN Women. This week, they launched a campaign called #MyWishForMoms.