Can you really tell the baby's sex based on the shape of your belly? Does heartburn mean your little one will be born with a full head of hair? And what about all those other "grandma warnings" passed down through generations? In this episode of MamaDoc BabyDoc, we put the most popular old wives' tales to the test. With a mix of evidence, experience, and a little bit of humor, we'll tackle the questions you've been dying to ask—and finally separate pregnancy fact from folklore.