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Periods restarted after Levonorgestrel

Resolved Question:

i had unprotected sex with my girl friend on 9/11/13 which is the fifth day of her period. She had levonorgestrel 1.5 mg on 10/11( after 24 hours of sex). today 15/11/2013 her periods again started. Can you please explain the reason.

Category: Family Physician-GP

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Category: HIV- AIDS Specialist
 21 Doctors Online


Thank you for asking the query at DoctorSpring.

The current bleeding is a sort of a side effect after using emergency contraception. Since the pill disrupts the normal hormonal signaling that regulates the menstrual cycle, irregular bleeding can occur. This will normalise within next cycle. You need to get in touch with your Doctor if here there is much more than 'normal' bleeding or if there is any other symptoms. Otherwise there is no reason to worry.

Hope this helps
Please feel free to ask followup questions
Thank you

Patient replied :

Thanks for your reply.. how to calculate her next cycle?. if her cycle is 28 days. the calculation will starts from 5/11/2013 or from 15/11/2013(recent bleed after pill). Is there any possibilities of pregnancy. Thanks.


You will not be accurately calculate the cycle. She will need to wait for a couple of months for her cycle to regularise and then see the pattern. No, there is no risk of pregnancy based on the information you provided.

Hope this helps
Thank you

Patient replied :

Thanks a lot Dr. i got answers for almost all my Questions. A last one.. Bleeding Started yesterday and still continues.Is this needs to be consider as a periods? ..Is this will be continue for another 4 days as what she normally have for 4 days. Thanks again.


Honestly it is difficult to comment on duration of breakthrough bleeding in women. As it varies individually. But it could last upto 4 days.

Thank you

Dr. Jaydeep Tripathy
Category: HIV- AIDS Specialist
MBBS from Sri Ramachandra University in December 2011
M.Med (Family Medicine) - TNMGR University, Chennai
MBA-MPH in Public Health in March 2016, SRM University
Finished AFIH in March 2016, SRM University
MRCP ( UK ), Internal Medicine, Royal College of Physicians, June 2016
Fellowship in Diabetology from Martin Luther University in January 2017

Currently Resident Physician, in MD Radiodiagnosis - Kamakshi Memorial Hospital, Chennai
Dr. Jaydeep Tripathy and 4 other Medical Specialists are ready to help you

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