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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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On Birth Control, Skipped Pills, Unprotected Sex, Taking Ampicillin For Skin Conditions. Should I Be Concerned?

If I have been on birth control for 2 and a half years now and accidentally skipped two pills consecutively during end of week 2/beginning of week three of my last pack and have unprotected sex at the end of week one of my new pack which would be the day before my "ovulation day" according to my cycle. Should I be concerned? Also I take ampicillin for skin conditions and have been on it for 4 years now. Does this also affect if I should be concerned?
Sat, 12 Oct 2013
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General & Family Physician,  's  Response
Hi, thanks for using healthcare magic

Some antibiotics can affect the function of oral contraceptives but this mainly occurs with anti microbials such as griseofulvin and rifampin.
Ampicillin would not affect the efficacy of the contraception.

Oral contraceptives would not be effective if some of the doses are missed.

You may want to consider a pregnancy tests. These can detect pregnancy by day 11 to 14 after conception.

I hope this helps
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On Birth Control, Skipped Pills, Unprotected Sex, Taking Ampicillin For Skin Conditions. Should I Be Concerned?

Hi, thanks for using healthcare magic Some antibiotics can affect the function of oral contraceptives but this mainly occurs with anti microbials such as griseofulvin and rifampin. Ampicillin would not affect the efficacy of the contraception. Oral contraceptives would not be effective if some of the doses are missed. You may want to consider a pregnancy tests. These can detect pregnancy by day 11 to 14 after conception. I hope this helps