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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Delayed Periods After Taking Unwanted 72?

I m of 18 yrs.I had xxx on 8th day of my periods on 1 August 2016 nd after 48 hrs I take unwanted72 nd on 10th of August light bleeding occurs for 4 days....nd my expected date of periods is 26-28 August ,nd it delay ,still now I have not my periods...am I pregnant..please reply ..I m really worried..
Tue, 27 Sep 2016
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General & Family Physician,  's  Response
Hi,
Thanks for posting in HCM.
I understand your concern.
Unwanted 72 is an emergency contraceptive pill. It needs to be taken within 72 hours of unprotected intercourse. Earlier it is taken, the protection seems to be better.
The pill would prevent pregnancy by causing withdrawal bleeding in the form of periods within 3 weeks from the day of its intake. Hence, accordingly your regular period dates could get altered.
In case you do not experience bleeding by 3 weeks, you need to take urine pregnancy test and seek medical attention promptly. The failure rate of using such pills is about 10%.
Hope the information provided would be helpful.
All the best.
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What Causes Delayed Periods After Taking Unwanted 72?

Hi, Thanks for posting in HCM. I understand your concern. Unwanted 72 is an emergency contraceptive pill. It needs to be taken within 72 hours of unprotected intercourse. Earlier it is taken, the protection seems to be better. The pill would prevent pregnancy by causing withdrawal bleeding in the form of periods within 3 weeks from the day of its intake. Hence, accordingly your regular period dates could get altered. In case you do not experience bleeding by 3 weeks, you need to take urine pregnancy test and seek medical attention promptly. The failure rate of using such pills is about 10%. Hope the information provided would be helpful. All the best.