Kicking butt on movie sets might have made Megan Fox famous, but it didn't prepare her for the battleground of the delivery room.
"I thought I was going to be tough and the nurses would be like, 'She's a warrior princess. She doesn't need an epidural. She's amazing. We're such big fans.'" Fox said. "As soon as I got out of the car, I was already crying for an epidural. I was asking the security guard for an epidural."
Fox said that while most of her pregnancy was perfect, her first trimester was filled with horrible morning sickness and - yikes! - the fear that the creature growing inside her might not even be human.
"It was so bad for me actually that … I was convinced that I was maybe birthing a vampire baby," she said. "Like the one from 'Twilight' you know what happens to Bella, where she's in cold sweats all the time. I felt like that was happening because I had no vitamins and nutrients I was just nauseous."
Fox also experienced "pregnancy brain" which she said, is a "very, very real thing."
"I had it so bad that Brian [Austin Green, her husband] wouldn't let me drive anymore," Fox said. "I would do things with my cell phone like I would go to get the juice out of the refrigerator and I would leave my phone … or I would be walking around the house yelling, 'Where's my phone?' and it would be in my hand."
Though she co-stars in Judd Apatow's latest comedy about middle age, "This Is 40," the 26-year-old new mom isn't ready to get older just yet.
"It sounds so old to me," she said about the big 4-0. "I try not to think about it."