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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Delayed Periods Despite Taking Unwanted 72 Post Unprotected Intercourse?

My sister had sex with her bf, just a day before she WS expecting her period. She took an unwanted 72 within 4-5 hours after intercourse, she got her periods a week later. Now its happen to b second month, her period is delay, is there a possibility of being pregnant??
Wed, 6 Apr 2016
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Dentist 's  Response
Hi Welcome to HEALTHCARE MAGIC..

I have gone through your query and can understand your concern...

Delay in periods is a common side-effect after intake of an emergency contraceptive pill like Unwanted 72. The delayed periods are due to effect of high dose of levonorgestrel hormone in Unwanted 72 pill which disrupts your normal menstruation & causes delayed periods. Your periods may be delayed for 1-2 cycles. An emergency contraceptive pill prevents pregnancy by inhibiting implantation of fertilized egg on to uterus. It is 95% successful if taken within 24 hours of having sex.
As you had taken the emergency contraceptive pill within 24 hours of sexual intercourse, pregnancy possibility should be very less.
An emergency contraceptive should not be used as regular method of contraception. Regular intake of emergency contraceptive pill could cause irregular & delayed periods & other harmful effects including infertility. Next time use regular contraceptive pill or condoms for prevention of unwanted pregnancy.

You should also undergo a pregnancy test to rule-out pregnancy possibility, however chances of that should be very less.

Refer to a gynaecologist for more queries
Don't worry you would be fine
Hope this information helps
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What Causes Delayed Periods Despite Taking Unwanted 72 Post Unprotected Intercourse?

Hi Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concern... Delay in periods is a common side-effect after intake of an emergency contraceptive pill like Unwanted 72. The delayed periods are due to effect of high dose of levonorgestrel hormone in Unwanted 72 pill which disrupts your normal menstruation & causes delayed periods. Your periods may be delayed for 1-2 cycles. An emergency contraceptive pill prevents pregnancy by inhibiting implantation of fertilized egg on to uterus. It is 95% successful if taken within 24 hours of having sex. As you had taken the emergency contraceptive pill within 24 hours of sexual intercourse, pregnancy possibility should be very less. An emergency contraceptive should not be used as regular method of contraception. Regular intake of emergency contraceptive pill could cause irregular & delayed periods & other harmful effects including infertility. Next time use regular contraceptive pill or condoms for prevention of unwanted pregnancy. You should also undergo a pregnancy test to rule-out pregnancy possibility, however chances of that should be very less. Refer to a gynaecologist for more queries Don t worry you would be fine Hope this information helps