Arkansas woman conceives two babies weeks apart

Here's how it happens — egg and sperm, implant. Of course, that's your first pregnancy. But if you ovulate more than one time a month — and women do — and a sperm happens to meet that egg and they, too, implant, guess what, you get a second fetus," Snyderman said during MSNBC's “Dr. Nancy” Thursday. "You just have to hope it happens within that early window."

Due dates for the babies are the end of 2009 and early 2010, reports say.