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Took postinor 2 after unsafe sex. How long does the effect of pills stay ?

hi, i am aaaaa , i took postinor 2 on the day i had sex with my boyfriend which was on the 27th of july, i had sex again on 4th of august, the last time i saw my period was on the 9th of july,i am afraid if i should take another postinor 2 since the sex was unprotective, i am AFRaid maYBE THE PILLS CHanged my cycle because using my previous cycle,i can t be ovulating by 4th of august, but my fear is that the pill must have chaNGED MY CYCLE Making me to be fertile as of 4th of august.
Asked On : Thu, 9 Aug 2012
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Dentist 's  Response
Hello and Welcome to ‘Ask A Doctor’ service.
I have reviewed your query and here is my advice.

Emergency contraceptive pills change the hormonal levels that control the menstrual cycle. Thus, they tend to change your menstrual cycles and so ovulation days. That is why experts always recommend to chooe routine contraception over emergency contraception.

Taking another emergency pill now will not help to prevent pregnancy as 72 hours have passed after unprotected intercourse. You can take a home pregnancy test like Prega News to test if you are pregnant or not.

These tests are fairly confirmatory. If the test is negative and you keep missing menstruation, then you should consult a gynecologist for physical examination.

Hope I have answered your query. Let me know if I can assist you further.

Dr. Viraj Ravin Shah
Answered: Wed, 20 Apr 2016
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