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Notes on Women's Health
Notes on Women's Health

Category: Emergency Contraception

A primer on emergency contraception pills

Thoughtful woman sitting on floor using laptop in living roomYou’ve heard about emergency contraception pills but do you really understand exactly what they do?

First, the simplest way we describe these pills to our patients is to call them emergency contraception that prevents pregnancy after unprotected sex. They are not traditional birth control. And they do not cause abortion because they work before a pregnancy occurs.

According to the American College of Obstetricians and Gynecologists, fertilization, the union of an egg and a sperm, occurs in the fallopian tube. During the next few days the fused egg and sperm move through the fallopian tube to the lining of the uterus, where it implants as a cluster of cells that will become the fetus and placenta. Emergency contraception pills do not work at this point. Read More