by Jennifer Parris, July 2, 2021

Before you start worrying about being infertile, you need to know how Plan B works in the first place. Its main goal: to prevent ovulation from occurring, Dr. Kecia Gaither, MD, MPH, FACOG, double board-certified in OB/GYN and Maternal Fetal Medicine, Director of Perinatal Services at NYC Health + Hospitals/Lincoln explains to Romper. “Plan B has a hormone called Levonorgestrel, which is a form of estrogen,” says Dr.Gaither. “This helps to prevent pregnancy.”

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