A 18-year-old female asked:
if you don't ovulate on birth control then why do you have your period?
2 doctor answers
Dr. Laura Anissian answered
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
Dr. Aaron Roland answered
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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