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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 Postinor-2?

Hi I am 28 years old and i had unprotectes intercourse with my boyfriend on the 25/4. I immediately took prostinor 2 within 12 goyrs of the incident. My period was due on the 29/4 but im 2 days late now. I m sure i was not pregnant bedore the intercourse occured. Please advice.
posted on Mon, 4 May 2015
Twitter Thu, 24 Sep 2015 Answered on
Twitter Thu, 24 Sep 2015 Last reviewed on
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General & Family Physician,  's  Response
Hi!
I can understand your concern for the delayed period following emergency contraception using Positnor-2.

Taken within 72 hours following an unprotected intercourse, Positnor-2 (Levonorgestrel containing emergency contraception pill) can prevent pregnancy in up to 90% of the users.
So, delayed period could be due to an early pregnancy as that may occur in 10% of the users.
A home pregnancy test done will rule out the possibility of pregnancy.
Positnor-2 is generally safe.
However it can cause irregular bleeding or spotting until your next period.
It is also known to cause delayed period as one of its side effect. If your period is more than 5 days late you should contact your gynecologist for proper evaluation to rule out hormonal imbalance, stress or emotional upset.

Hope this answers your query.
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What Causes Delayed Periods After Taking Postinor-2?

Hi! I can understand your concern for the delayed period following emergency contraception using Positnor-2. Taken within 72 hours following an unprotected intercourse, Positnor-2 (Levonorgestrel containing emergency contraception pill) can prevent pregnancy in up to 90% of the users. So, delayed period could be due to an early pregnancy as that may occur in 10% of the users. A home pregnancy test done will rule out the possibility of pregnancy. Positnor-2 is generally safe. However it can cause irregular bleeding or spotting until your next period. It is also known to cause delayed period as one of its side effect. If your period is more than 5 days late you should contact your gynecologist for proper evaluation to rule out hormonal imbalance, stress or emotional upset. Hope this answers your query.