New parenthood hasn't always been easy for Chrissy Teigen and John Legend.

In a candid new interview, the 38-year-old singer opened up about his wife's battle with postpartum depression following the April 2016 birth of their first child, daughter Luna.

MUST SEE: Oh No! Chrissy Teigen Mommy-Shamed for Holding Baby Luna Wrong

"You don't see it coming. You're not emotionally prepared for someone that's going through a dark time as you're welcoming this new life," John recently told The Sun.

"When you don't understand what's happening, it's a bit challenging to figure it out and you don't know if it's something you've done or some other ­reason why she's not feeling well," he continued.

"Once you understand what the reasons are then it makes perfect sense and you can adjust accordingly," John added.

MUST SEE: John Legend Talks Parenting Daughter Luna With Wife Chrissy Teigen — "It's Difficult"

Luckily, the "Love Me Now" singer revealed Chrissy's struggle with postpartum depression hasn't deterred the couple from wanting to have more kids in the future. "[Chrissy is] already doing better. [We still] want three of four children," he said.

The 31-year-old model first revealed her postpartum depression diagnosis in early March. "I couldn’t figure out why I was so unhappy. I blamed it on being tired and possibly growing out of [my career]: 'Maybe I’m just not a goofy person anymore. Maybe I’m just supposed to be a mom,'" Chrissy said of returning to work after giving birth to Luna.

MUST SEE: Kelly Clarkson Jokes She "Hates" Chrissy Teigen — Find Out Why!

"When I wasn’t [working], I never left the house. I mean, never. Not even a tiptoe outside. I’d ask people who came inside why they were wet. Was it raining? How would I know — I had every shade closed," she continued.

"Postpartum does not discriminate. I couldn’t control it. And that’s part of the reason it took me so long to speak up: I felt selfish, icky, and weird saying aloud that I’m struggling. Sometimes I still do," Chrissy added.

More From Closer Weekly:

Is Chrissy Teigen Pregnant With Baby No. 2? See Everything We Know!

Chrissy Teigen Talks Baby No. 2 With Husband John Legend: "A Little Boy Is Next for Sure!"

John Legend Reveals He Missed Daughter Luna Saying "Dada" and "Mama" for the First Time