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Query about efficacy of Plan B.

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I am currently taking penicillin and am also on the birth control ortho tri cyclen. I had unprotected sex and am worried that the antibiotic interfering with my BC. I took plan B just in case. Am I still at risk of getting pregnant?

Category: OBGYN

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Dr. Aarti Vazirani
Category: Infertility Specialist
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 28 Doctors Online

Expert:  Dr. Aarti Vazirani
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Hello
Thanks for writing to DoctorSpring.com with your health concern.

Yes, penicillin will interfere with the BC, reducing its efficacy.
You have taken Plan B, so do not worry, you stay protected against pregnancy.

However, if you are going to be sexually active for the rest of the month, then use a backup method like condoms, before you start a new pack.

Hope this helps, would be glad to answer any follow-up queries.
Take care.

Dr. Aarti Vazirani
Category: Infertility Specialist
Experience: 
Residency: Obstetrics & Gynecolog, BJMC,Civil hospital, Ahmedabad, 2008
Post Graduate: MS (Obstetrics & Gynecology), B.J. Medical College, Ahmedabad, 2008
Medical School: MBBS, B.J. Medical College, Ahmedabad, 2004
Dr. Aarti Vazirani and 4 other Medical Specialists are ready to help you

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