A member asked:

Does plan b end chances of getting pregnant the same month?

3 doctors weighed in across 2 answers

Not necessarily: It would decrease your likelihood, but not reliably. Be sure to use backup contraception!!

Answered 3/3/2015

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Dr. Heidi Fowler answered

Specializes in Psychiatry

No: Plan B is an emergency contraceptive to be used AFTER an episode of failed birth control. It doesn't keep working for the rest of the month. Plan B One-Step 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

Answered 10/27/2017

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