A “super-fertile” mother produced a second child just four weeks after becoming pregnant with her first — and she didn’t realize it until the babies were born.
Sophie Small, 30, gave birth to daughters Holly and Darcy in August 2020, mistaking the girls for twins at first.
Midwives were perplexed by the twins’ disparities in size, with Darcy weighing 4 pounds, 2 ounces and Holly, who was born second, weighing a much heftier 6 pounds, 1 ounce.
Doctors then discovered that the daughters were conceived a month apart due to superfetation, a condition in which a second pregnancy develops soon after the first.
According to the Cleveland Clinic, “superfetation in humans is so rare that there are only about 10 confirmed cases.”
“They’re so unusual that when they happen, they frequently make headlines,” according to the clinic’s website. “The chances of you being affected by superfetation are almost nil.”
According to the clinic, a pregnant woman’s body undergoes “hormonal changes that make pregnancy nearly impossible while a fertilized egg (embryo) is already growing inside the uterus.”
Small, one of just a few women to have encountered the event, told Kennedy News that her pregnancy was “horrific.”
She was hospitalized eight times in seven weeks due to severe morning sickness.
“I was carrying two babies who were growing at different stages, but we didn’t know that,” the mother explained. “They couldn’t figure out what was wrong with me. I was expecting twins, but one was significantly larger than the other.”
“They had their own sacs and placentas, so they could feed when they wanted to,” she said further. “However, they couldn’t figure out why one twin was bigger than the other.”
Only after the girls were born at such disparities in size did doctors conduct testing and find that the kids were not twins at all.
“Darcy was a 32-week baby, and Holly was a 36-week baby,” said Small.
The swimming instructor from the United Kingdom, who is also a mother to Oscar, says skeptics simply don’t believe her when she tells them the extraordinary story.
“When I explain,” she asserted, “people think I’m a nutter [crazy].” “When they ask how far apart they are, I tell them that Darcy is two minutes older and four weeks younger, while Holly was born two minutes later but four weeks older.”
Others, according to Small, do not believe the girls are related because of their dissimilar features and mannerisms.
“Holly has blond hair, big beautiful blue eyes, and wants to be a princess or a jockey,” Holly’s mother remarked. “Darcy has mousey brown hair, she’s a tomboy, and she wants to be a train driver when she grows up.”
Small claims she knew she was “very fertile” because Oscar was conceived so rapidly, and she believes she ovulated again while she was already pregnant with Holly.
Holly was born with cerebral palsy, which affects the right side of her body, and it is unknown whether the disease is related to the superfetus.
Darcy’s stomach lining had not grown adequately at the time of her birth, owing to her preterm birth at 32 weeks.
Small told Kennedy News Service that her girls spent the first few months of their lives in and out of hospitals, but that they are now doing well.
While Holly is still 6 pounds heavier than her sister Darcy, the two are ready to take on the world.
“They’re very mischievous, fun-loving little girls,” said the proud mother. “They’re doing wonderfully well. They’ve started nursery and are quite self-assured.”
“I had no idea what the future would hold for them when they were born,” she continued. “It was so difficult, but we’re so happy and blessed to have them.”