Woman becomes pregnant twice in 10 days because of a rare medical phenomenon

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One Australian woman has baffled her doctors after she conceived twice in 10 days—after just having sex once!

In 2006, Kate Hill was diagnosed with polycystic ovarian syndrome (PCOS), a hormonal condition that prevented her from ovulating, BBC reports. After hormone treatments, Kate and her husband Peter were delighted to find out that she was pregnant. 10 days later, they found out that she had conceived again!

Kate initially conceived twins, but one baby didn’t develop. Almost two weeks later, while pregnant, she became pregnant again. Even though Kate was pregnant, she had ovulated again, causing her to become pregnant one more time.


Photo: donnierayjones/Flickr

What makes the Hills’ case even more exceptional is the fact that they only had unprotected sex once. “My husband and I only had intercourse one time,” Kate said in an interview with Today Tonight. “His sperm stayed alive for 10 days to fertilize the second egg released.”

“Hole in one, maybe,” Peter quips.

Her doctor had to Google it. “I’ve never ever seen it before,” Dr. Brad Armstrong said. “[Her condition was] so rare that I could not find any literature in the medical review websites at all.”

The twins, named Olivia and Charlotte, arrived 2 days before Kate’s planned C-section date. The Hills are now planning their daughters’ first birthday party.

This phenomenon is called superfetation. Find out more on the next page.

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