I had unprotected sex the day before ovulation and took emergency contraceptive pills twice. Could I still be pregnant? #1005/15

Q:        Hi doctor,

I had unprotected sex on day before my ovulation.  I totally forgot about it until I reminded him not to plant inside me.  He handed over the Postinor 2 tablet (emergency contraceptive pill).  I consumed one pill immediately and the next pill 5 hours later.  I worry that I might be pregnant as my ovulation was on the next day.  I took another set of Postinor 2 pills.

Please advice me, will I still become pregnant?  Did I overdose myself?



First, you do not need to worry at all about overdosing with emergency contraceptive pills in the form of Postinor 2 (Plan B in the United States).

Pregnancy is definitely possible as you had sex the day before ovulation.  The main (probably the only) way emergency contraceptive pills work is to delay the time of ovulation, but Postinor must be taken sooner than it was in your case to delay ovulation.  Your risk of pregnancy may be in the range of 15 to 20%.

In any case, use condom until your next period.

Good luck.

Robert A. Hatcher MD, MPH

Emeritus Professor of Gynecology and Obstetrics

Emory University School of Medicine

Atlanta, GA

Key Words:  unprotected sex, ovulation, Postinor 2 emergency contraceptive pills, pregnant, Plan B, overdose, risk, delay, condoms, period

To learn more about the advantages and disadvantages of emergency contraceptive pills and condoms, go to: www.managingcontraception.com.   You can order all of these books listed below from our website or by calling 404-875-5001. 

Current Books:

Contraceptive Technology 20th edition

Managing Contraception 2015-2016 edition

Choices 2014 edition

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Posted on

November 12, 2015