Medical Questions > Womens Health > Birth Control Forum

how long does pregnancy take to show up positive?

User Profile
i am currently taking the drug isonizid for tuberculious bacteria i breathed in. but for a while i was on the depo then stoped that a month ago and am now taking the drug and nuvaring,during the in between time i have been sexually active and i missed my period and have many symptoms of pregnancy but a negative pregnancy test. how long does it take to show up positive on a pregnancy test

Did you find this post helpful?

User Profile
replied January 31st, 2012
Birth Control Answer A30995
Welcome to ehealthforum.
Few medications are known to affect the efficacy of hormonal birth control measures. If you had been sexually active without additional protection while taking the medications, chances of pregnancy are a possibility. Sometimes you can keep getting false negative results during early pregnancy, as the kits are calibrated ones, so unless the hormone levels in urine reach a certain level, they do not show positive results. The test should always be done on early morning first urine sample to get accurate results (pregnancy hormone HCG is believed to be in highest concentration in this sample, and you should avoid lot of fluid intake and caffeinated beverages in the night before taking the test). If pregnancy is suspected, you should consider visiting your doctor/gynecologist for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately).
Take care.

Did you find this post helpful?
This question has been answered by the doctor. This topic is now open for public discussion, however no comments below this point will be answered by a doctor.
Must Read
Birth control is helpful in preventing pregnancy. Need to know more about birth control? Start here to learn more about popular methods of birth control....
You have many birth control options. Each works differently. What are the choices and what should you consider in order to help you make your decision? ...
Each method of birth control comes with risks to your health. What are the general problems you could encounter?...
DISCLAIMER: "Ask a Doctor" questions are answered by certified physicians and other medical professionals. For more information about experts participating in the "Ask a Doctor" Network, please visit our medical experts page. You may also visit our Birth Control , for moderated patient to patient support and information.

The information provided on eHealth Forum is designed to improve, not replace, the relationship between a patient and his/her own physician. Personal consultation(s) with a qualified medical professional is the proper means for diagnosing any medical condition.