Imagine giving birth to an 18-inch baby. That would be hard enough for the average-sized female, but for Stacey Herald, who is 2-feet, 4-inches tall, it was an amazing task.

The Guinness Book of World Records is investigating Herald’s claim that she is the smallest woman to ever give birth to such a large baby.

Herald, 33, was born with osteogenesis imperfecta, a genetic disorder that causes bones to break easily.

She gave birth five weeks ago to baby Makaia, who is unaffected by the disorder and will grow to an average size. However, Herald’s 16-month-old daughter, Katira, also suffers from the disorder.

“My whole life I've been told that I wasn't able to have children, (and) I would not live through the pregnancy – that with the size of my torso, the baby would grow up underneath my lungs and smother out my lungs and my heart, and we would both die” .

“Something inside me just didn't believe that.” Doctors originally told Herald she should abort Katira, but Herald, and her husband Wil refused.