A member asked:

Sexual activity on september 8, negative qualitative hcg blood test on december 6, is this reliable? am i not pregnant? (had light periods since sept)

A doctor has provided 1 answer
Dr. Robert Kwok answered

Specializes in Pediatrics

Tests are accurate: Pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, vaginal spotting, or medications. A test gives a reliable result 3 weeks after sex (2-3 weeks after when conception might have happened) or 1 week after missing a period. If done sooner, a negative result may be due to testing too early such as less than 2 weeks after conception.

Answered 1/7/2019

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