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What’s the natural menstrual cycle -- the one that happens when you’re not on the birth control pill?

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The main hormones at work during the menstrual cycle are estrogen and progesterone. If you’re not on the birth control pill, your body makes estrogen in the first half of your cycle.

Estrogen tells the uterine lining to grow to get ready for a fertilized egg. When estrogen peaks, an ovary releases an egg.

Your body then adds progesterone to the mix, stopping the uterine lining growth. If there’s no pregnancy, both hormones drop off, which starts the shedding of the lining -- this is your period.

From: PMS and the Pill WebMD Medical Reference

SOURCES:

Medscape. “Premenstrual Syndrome.”

American Academy of Family Physicians. ”Premenstrual Syndrome (PMS).”

Office on Women’s Health. “Premenstrual Syndrome (PMS) fact sheet.”

National Women’s Health Resource Center. “Birth Control Pills: Benefits.”

American Society for Reproductive Medicine. “Noncontraceptive Benefits of Birth Control Pills.”

National Women’s Health Resource Center. “Birth Control Pills: Overview.”

Association of Reproductive Health Professionals. “Understanding Menstrual Suppression.”

Reviewed by Renee A. Alli on November 10, 2018

SOURCES:

Medscape. “Premenstrual Syndrome.”

American Academy of Family Physicians. ”Premenstrual Syndrome (PMS).”

Office on Women’s Health. “Premenstrual Syndrome (PMS) fact sheet.”

National Women’s Health Resource Center. “Birth Control Pills: Benefits.”

American Society for Reproductive Medicine. “Noncontraceptive Benefits of Birth Control Pills.”

National Women’s Health Resource Center. “Birth Control Pills: Overview.”

Association of Reproductive Health Professionals. “Understanding Menstrual Suppression.”

Reviewed by Renee A. Alli on November 10, 2018

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What is your menstrual cycle when you're on the pill?

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