“If a woman has twins,” Schapiro said, “two eggs are released at the same time. If fertilization by the man’s sperm is successful, the egg or eggs then implant in the uterus, the pregnancy begins and no further ovulation occurs.īy being concieved while Rebecca was already pregnant, baby Rosalie was a rare "medical marvel." CNN Lillian Schapiro.įirst, women typically ovulate only once per cycle, releasing one or more eggs simultaneously.
Superfetations are rare for a variety of reasons, said Atlanta gynecologist Dr. The job is done in one go! And then Rebecca did some research, and we realized how unique and how lucky we were.” It’s like winning the lottery.”ĭad felt the same: “I was elated to be having one child, but even more so for twins. “I couldn’t believe it had happened to me,” Rebecca added with a laugh. “They realized that the baby was growing at a consistent rate of three weeks behind the first one, and it was then that they said to me, they think this is a superfetation pregnancy,” she said. Courtesy Rebecca RobertsĬalled a superfetation, getting pregnant while already carrying a baby is so rare that one 2008 study found fewer than 10 recorded cases in the world.ĭoctors told the couple the babies were actually conceived about three weeks apart, Rebecca said. Baby Noah was joined in utero by fraternal twin Rosalie some three weeks after Noah's conception.
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