A 18-year-old female asked:
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if you don't ovulate on birth control then why do you have your period?

2 doctor answers
Dr. Laura Anissian
20 years experience Internal Medicine
Hormones: When you take the last pills in the monthly pack they do not contain the same amount of hormone that the others do and therefore your body responds to it by shedding the endometrium. You are not ovulating, but you are still building up and shedding the endometrium based on the hormones (progesterone and estrogen) changing as dictated by the pills.
Answered on Oct 12, 2014
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Dr. Aaron Roland
34 years experience Family Medicine
Good question!: The pill inhibits ovulation but the hormones in the pills mimic some of the hormonal changes that occur during a normal menstrual cycle causing the build up and then shedding of the uterine lining.
Answered on Mar 15, 2016
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Related questions:

A 19-year-old female asked:
Dr. Mary David
Specializes in Obstetrics and Gynecology
Sometimes: Sometimes you ovulate as soon as the next month after stopping pills and some studies even show increased fertility in the first months after stopping ... Read More
A 25-year-old female asked:
Dr. Gayane Ambartsumyan
19 years experience Fertility Medicine
Yes: Assuming you have regular periods then that would be the case. You can also test with an ovulation predictor kit if needed.
3
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A 43-year-old member asked:
Dr. Michael Traub
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No: Usually ovulation occurs about 12-14 days before the period comes so too late for that. To stop ovulation with pills you need to start with the period ... Read More
A 24-year-old female asked:
Dr. Greg Hinson
26 years experience Family Medicine
No: On a Progesterone only birth control method like camila, there is not predictability to bleeding patterns, and regular cycle-like bleeding doesn't mea ... Read More
3
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