Tori Spelling had her fourth child yesterday, a boy named Finn Davey, and while she says he was a complete surprise, she and husband Dean McDermott couldn’t be happier.

“We found out the news together. I had chronic migraines and I was in the emergency room getting treated for one of my migraines and when I got there they said, ‘Before we can treat you, you have to do the pee in the cup.’ And I said ‘Oh, don’t worry I’m not pregnant. I just had a baby a month ago.’ And they [said], ‘Sorry, it’s policy at the hospital,'” Tori said. “So I did it, and they came back and said, ‘You’re pregnant!’ And I said, ‘That can’t be!'”

The couple had been wanting to have a fourth child, however, and viewed Finn as a little miracle. They posted about the birth on Twitter and on their blog.