A member asked:

Doctor said everything normal on transvaginal ultrasound, only sex was 16 weeks prior. home urine test neg week later. no way i'm preg right?

2 doctors weighed in across 2 answers
Dr. Michael Gabor answered

Specializes in Diagnostic Radiology

No way: At 16 weeks there is no way an intrauterine fetus wouldn't be seen on ultrasound. Also, home pregnancy test is quite sensitive.

Answered 6/4/2014

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Unlikely: To be sure, repeat the urine pregnancy test now. The sensitivity of the Urine BHcg test for pregnancy is exceptionally good these days, but could miss an very early pregnancy one week after intercourse. The only time I have seen it be inaccurate as compared to the blood test was a patient who bought it at the dollar store.

Answered 6/5/2014

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