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A 19-year-old female asked:

I'm 4 or 5 days late for my period, i took a pregnany test this morning it was negative i've calculated to be about 19 maybe 18 days past conception?

1 doctor answer3 doctors weighed in
Dr. Robert Kwok
Pediatrics 35 years experience
Maybe not pregnant: Can retest in 4-5 days. A urine pregnancy test done correctly will give a reliable result 3 weeks after sex (or when conception might have happened) or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon, and therefore lead to a repeat test. If a woman gets her normal regular period, then she is not pregnant.
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Last updated Apr 28, 2015

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