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antibiotic was taken after sex. ..

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Hi there,

My girlfriend has been on the Birth Control pills for almost 2 years now, 3.5 weeks ago, we had unprotected sex and I ejaculated inside her. About 30 hours later that, she took antibiotic that is given by doctor and was told that the antibiotic will make the pills ineffective.

I have been reading article online and none of it describe my situation. Because all of the situation discuss mention that all antibiotic was taken before sex .

Oh . And also because the anti biotic suppose to be for 5 days . She miss some here and there and took her a week to finish it .

So 3.5 weeks ago:
- We had unprotected Sex on Thursday afternoon
- Friday night, she took the antibiotic
- Next Wednesday, she had her period

Is there a chance she can be pregnant?

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replied May 29th, 2011
Am I Pregnant Answer A23512
Welcome to ehealthforum,
If she has got her normal periods after the intercourse, it is unlikely that she can be pregnant. Wait and watch for her next periods. Look out for development of any other new symptoms that could suggest possibility of early pregnancy. If her periods are more than 10 days late, or if she develops any other symptoms (suggestive of early pregnancy), she should consider visiting her doctor/gynecologist for further evaluation/examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately).
Take care.

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