Cheryl says she's been getting help for anxiety over the past year.
The singer told Nick Grimshaw that having a baby has changed her perspective, adding: "Things that might have bothered you before or might have been a problem before, become less relevant to you."
She said that she decided to seek help "because I don't want the baby to feel that, and I don't want to feel stressed as a mam".
Her son Bear was born in March 2017.
Cheryl, who was co-presenting with Nick Grimshaw on Radio 1 on Thursday evening, said: "The worrying stuff kind of takes a sideline.
"You know what I used to be like for anxiety and stuff? I have been seeing somebody for about the past year to keep that anxiety in check."
Cheryl and Nick were both judges on The X Factor in 2015.
She added: "I don't want to feel stressed as a popstar, even. We're supposed to be living our best lives, aren't we?"
The 35-year-old also told Grimmy that motherhood makes her "see things differently".
She said: "Your whole world changes," adding that she no longer worries what people think of her new music.
"It's not nerve-wracking, it's more exciting this time around."
Her new track Love Made Me Do It is the first music she's released since Only Human in 2015.
The singer added that being a mum means she cares less about her own appearance.
"Maintenance goes out of the window," she said.
It also seems to be a practicality issue.
"I keep seeing people like Cardi B with those massive nails on. How are you changing your nappies with those big talons?"