Mom With Two Wombs Has Twins

MARQUETTE, Michican (WUSA)--A Michigan woman with two wombs has given birth to twin daughters. One from each uterus.

Sarah Reinfelder has a condition known as Uterus Didelphys.

In a female fetus, the uterus starts out as two small tubes. As the fetus develops, the tubes normally join to create one larger, hollow organ--the uterus. Sometimes, however, the tubes don't join completely. Instead, each one develops into a separate cavity. This condition is called double uterus or Uterus Didelphys.

Doctors say getting pregnant, let alone giving birth to twins in each uterus, is rare. There are only 3 other reported cases in the world.

According to the Mayo Clinic, "Double uterus is rare--and sometimes not even diagnosed. According to one estimate, uterine abnormalities occur in as many as 4 percent of women who have normal pregnancies, and of these women, about 5 percent have a double uterus. The percentage of women with a double uterus is likely higher in women with a history of miscarriage or premature birth."

Sarah Reinfelder found out about her extra uterus after having a miscarriage a couple years ago.

Some women have a double uterus and never realize it--even during pregnancy and childbirth. Each cavity in a double uterus often leads to its own cervix. Some women with a double uterus also have a duplicate or divided vagina.

Possible signs and symptoms may include: Unusual pain before or during a menstrual period or abnormal bleeding during a period, such as blood flow despite the use of a tampon

Sarah and her husband, Shane, also have a 10-month old son named William.

The Reinfelder's new daughters--Valerie and Kaylin--were born 7 weeks premature. Each has underdeveloped lungs-which is common for preemies. The girls are expected to remain hospitalized another 3 weeks.