Pregnancy is almost long enough for you to forget what having a period feels like. But rest assured, the first period postpartum will swoop in to remind you—potentially with a vengeance. Here's ...

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Jessica Biel opens up about getting her first period and dealing with period shame. (Photo illustration: Yahoo News; photos: Noam Galai/Getty Images for KinderMed) Jessica Biel wants to get people ...

The day I got my first period is permanently implanted in my brain. As every girl knows, one of the cruel aspects of mother nature is that you never really know when that first period is going to hit.

One in four American women feel they were totally unprepared for their first period – according to new research. For the most part, over half (55 percent) were generally unprepared for the first time ...