Overall, the odds were stacked against Reinfelder having a successful pregnancy. Of the 4 percent of women with reproductive malformations, Hedmark pointed out that 5 percent have two uteri. Of those, 3 percent are likely to conceive one child per uterus. And of those pregnancies, only 1 percent is carried to term.
Reinfelder's condition was potentially precarious enough that she and her family moved closer to the hospital so they would not have to commute two hours for checkups.
And a double uterus does not make a pregnancy any easier.
With babies in two separate wombs, Reinfelder found herself with baby bumps that flopped to either side of her stomach as the babies grew, leaving a soft spot in the middle of her belly.
"I was the most lopsided pregnant woman you've ever seen," Reinfelder said.
The twins' prognosis looks good, according to their doctors. They are no longer intubated to assist their breathing. Both are taking their mother's breast milk and should be out of the hospital in a few weeks.
"It's blowing our minds, still," Reinfelder said.