A pregnant woman in Arkansas learned she was pregnant again when she went in for a routine ultrasound.  The babies are not twins, and were conceived two and a half weeks apart.

This is an extremely rare medical occurrence called superfetation, with only 10 other cases being reported.  The phenomenon is much more common in animals, due to a delay of implantation.

In June, doctors located Todd and Julia Grovenburg’s growing baby girl Jillian, and noticed a smaller baby growing beside her.

The baby boy, Hudson, is due two and a half weeks after his sister.

Watch video below:

Filed under: Across the Nation