The 26-year-old star, who gave birth to daughter Kyla in December 2014, filled out a questionnaire for magazine Us Weekly, where she revealed her struggle.
‘I suffered a bit of postpartum depression,’ the actress admitted.
‘You’re not alone or crazy, ladies!’
On top of her honest admission, Hayden also revealed '25 things you don’t know about me,' telling fans that she gained 43 pounds during her pregnancy.
But despite this, Hayden says she desperately wants more children after having Kayla.
‘I always said four,’ Hayden revealed of her childbirth plans.
‘But I’m not going to speak too soon. One at a time.’
Hayden is engaged to heavyweight boxing champion Wladimir Klitschko, 39, who she joked should find a way to carry the baby next time.
‘When I was pregnant, he did this thing where he would such in his stomach sand then I would put my stomach to his so that he could feel when she was moving - almost like she was in his stomach,’ the Heroes actress added.
Have you suffered with post natal depression? Does it help to hear women in the public eye talking about it? Tweet us @CloserOnline.