Possible pregnancy on lo loestrin fe with antibiotics. Would be 16 weeks but only have abdominal cramping and pressure and have had 5 negative tests?

Pregnancy unlikely. One urine pregnancy test, done correctly, with a negative result means NOT pregnant, unless the pregnancy just began within the past 2 weeks. One can repeat the test 1 week later, to confirm the first negative result. Commonly used antibiotics don't noticeably change the risk of pregnancy if a woman is taking her birth control pills correctly, and is not having vomiting nor diarrhea.

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