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Back to QuestionsGeneral

Can taking antibiotics cause a delay in menstruation (amoxicillin and cefdinir for bronchitis, followed by a single dose of Canesten)?

Yes, it is possible to have a false negative result on a pregnancy test even with a 3-day delay in your period. The sensitivity of urine tests can vary, so it's recommended to take another test in a few days if your period still hasn't started.

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