HealthCareMagic is now Ask A Doctor - 24x7 | https://www.askadoctor24x7.com

Get your health question answered instantly from our pool of 18000+ doctors from over 80 specialties
159 Doctors Online

By proceeding, I accept the Terms and Conditions

Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

HCM Blog Instant Access to Doctors
HCM BlogQuestions Answered
HCM Blog Satisfaction

Had Unprotected Sex. Took Plan B After 72 Hours. Home Test Was Positive, Doctor Said It Was Negative. Can Plan B Affect Result?

hello so I m worried about my body , and what s going on me and my partner had unprotected sex and he came inside of me I didn t take plan b until after 72 hours and even after I took the pill we had sex again I was 2 days late and I took a home test an came out positive I went to the doctors and tested negative , yet I am now 6 days late is there any possibility that I may be pregnant or why did I test positive is it because of plan b ? can plan b affect test results ?
Tue, 4 Dec 2012
Report Abuse
OBGYN 's  Response
Hi and welcome to the site.

Pregnancy tests are very accurate. There are very rare reasons for a false positive. Plan B will not impact the result of a pregnancy test. There are more often false negatives. This can be due to a test taken later in the day early in pregnancy. If a woman has been drinking a lot of water, the hormone level in the urine can be diluted and cause a false negative. First morning urine should be used for best accuracy. The other possibility is that there was a pregnancy but it didn't grow correctly. This would cause a miscarriage. Sometimes there will not be any bleeding with a miscarriage but the pregnancy test will turn negative as the hormone level drops.

I hope this information has been helpful.
I find this answer helpful
Disclaimer: These answers are for your information only and not intended to replace your relationship with your treating physician.
This is a short, free answer. For a more detailed, immediate answer, try our premium service [Sample answer]
Share on
 

Related questions you may be interested in


Recent questions on Sexually transmitted disease


Loading Online Doctors....
Had Unprotected Sex. Took Plan B After 72 Hours. Home Test Was Positive, Doctor Said It Was Negative. Can Plan B Affect Result?

Hi and welcome to the site. Pregnancy tests are very accurate. There are very rare reasons for a false positive. Plan B will not impact the result of a pregnancy test. There are more often false negatives. This can be due to a test taken later in the day early in pregnancy. If a woman has been drinking a lot of water, the hormone level in the urine can be diluted and cause a false negative. First morning urine should be used for best accuracy. The other possibility is that there was a pregnancy but it didn t grow correctly. This would cause a miscarriage. Sometimes there will not be any bleeding with a miscarriage but the pregnancy test will turn negative as the hormone level drops. I hope this information has been helpful.