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How Effective Is Plan B Emergency Contraceptive In Preventing Pregnancy?

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Posted on Fri, 3 Jul 2015
Question: If I ejaculated in a girl who wasn't ovulating and then she used plan b one step within the hour what is the percentage that it worked?
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Answered by Dr. Chobufo Ditah (19 minutes later)
Brief Answer:
At least 95%.

Detailed Answer:
Hi and thank you so much for this query.

If she used it within 1hour after ejaculation, the chances of pregnancy even with ovulation are at most 5%. Because she was not ovulating, there is almost no risk because you cannot get pregnant when you were not ovulating. I will recommend that you always strive to use a condom during sexual encounters to protect both infections and pregnancy.

I hope this helps. I wish you well. Thanks for using our services and do feel free to ask for more information and clarifications if need be.
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Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Chobufo Ditah

General & Family Physician

Practicing since :2009

Answered : 6321 Questions

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How Effective Is Plan B Emergency Contraceptive In Preventing Pregnancy?

Brief Answer: At least 95%. Detailed Answer: Hi and thank you so much for this query. If she used it within 1hour after ejaculation, the chances of pregnancy even with ovulation are at most 5%. Because she was not ovulating, there is almost no risk because you cannot get pregnant when you were not ovulating. I will recommend that you always strive to use a condom during sexual encounters to protect both infections and pregnancy. I hope this helps. I wish you well. Thanks for using our services and do feel free to ask for more information and clarifications if need be.