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A 23-year-old female asked:

I had unprotected sex and am on lo loestrin fe. i also take wellbutrin, (bupropion) topimarate, phentermine.can the meds lower effect of bcp & could i be pregnant?

1 doctor answer2 doctors weighed in
Dr. Lynne Weixel
Clinical Psychology 36 years experience
Not impossible: Not likely unless everything was just 'so'. The time of ovulation, if in your case the Topiramate did lower the effectiveness enough, etc. The other meds don't present a problem. So, if you miss a period - do a test and find out if the happened. Learn your fertile time and use protection then - consider alt to either the seizure drug or the pill. Discuss choices w/ our Dr. Best!

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Last updated May 26, 2016

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