U.S. doctors online nowAsk doctors free
A 18-year-old female asked:

Is a blood pregnancy test accurate 18 days after sex? i got one at my doctors office last week and it was neg. could i still be pregnant ?

1 doctor answer3 doctors weighed in
Dr. Anne Hale
Specializes in Obstetrics and Gynecology
Yes: Yes it should be accurate. I have seen a few women who are pregnant and the test is negative for a while. If you are still doubting the results then retest and you should feel nausea, breast tenderness, fatigue in most early pregnancies.

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Educational text
Free
Talk to a doctor
24/7 visits - just $39!
50% off with $15/month membership
Last updated Mar 31, 2015

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.