The withdrawal bleeding that occurs while women are using oral contraceptives is different from the bleeding that occurs when women who do not use oral contraceptives have their periods.

Question

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The withdrawal bleeding during oral contraceptive use is due to the sudden drop in hormones during the placebo week, while menstrual bleeding in non-contraceptive users is due to shedding of the uterine lining in response to hormonal changes throughout the menstrual cycle.

The Withdrawal Bleeding That Occurs While Women Are Using Oral