Mono-mono twins are very rare. A 13-year study of mo-mo twins estimated that they make up just 0.008% of total births. Even ...

After all, shortly after the fateful ultrasound, I discover that the odds of us having gotten spontaneously pregnant with twins, meaning without fertility assistance or genetic influence, were ...

A couple in Alabama was surprised with twin girls just 13 months after giving birth to twin boys. ... "When they did the ultrasound they said there was one baby.

The couple's excitement grew when her first ultrasound showed she would have identical twin girls. "It was such an amazing surprise," Ashley said.

Kelsey Hatcher was just 17 when she learned she had a double uterus. Fifteen years later, the Alabama woman got a second shock: She's pregnant with twins, one in each uterus.