The 'Friends With Kids' star, who gave birth to her son with her husband Brian Austin Green in September, said she was unprepared for how painful it would be, reported Contactmusic.
"I was screaming for an epidural when Brian was driving me to the hospital because my water broke on its own and I was immediately - it was level orange alert pain. It can't be anything because it hurts so bad. It was so intense. And I thought I was gonna be really tough and make it, I was gonna labour to like 8 cm but the first contraction that I got was horrific," she said.
Despite the pain, the 26-year-old actress still wanted to look her best during the labour.
"I had wet hair so I was trying to blow dry my hair before I went to the hospital because I didn't want to go to the hospital with wet hair," she added.