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A female asked:

How effective is emergency contraception the day of ovulation? if i have sex during ovulation, but take ec right after, what is my risk of pregnancy?

2 doctor answers6 doctors weighed in
Dr. Jennifer Mcdonald
Gynecology 22 years experience
See below : Taking emergency contraception within 48 hours of unprotected intercourse decreases the chances of pregnancy by 75%.
Dr. Heidi Fowler
Psychiatry 25 years experience
EC: is up to 89 % effective when taken within 72 hours (3 days) after unprotected sex. It can reduce chance of pregnancy by up to 95% if used within 24 hours. It continues to reduce the risk of pregnancy up to 120 hours (5 days) after unprotected sex, but is less effective as time passes.

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Last updated Nov 12, 2017

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