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Dr. Arun Phophalia
Dr. Arun Phophalia, Doctor (MD)
Category: Health
Satisfied Customers: 31607
Experience:  MBBS, MS (General Surgery), Fellowship in Sports Medicine
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I went to the doctor 2 weeks ago and they took blood and

Customer Question

I went to the doctor 2 weeks ago for nausea and they took blood and concluded i was not pregnant. I took a pregnancy test today and it says I am pregnant. I was wondering how this happened where I tested negative at the doctor but 4 at home pregnancy test tested positive (one from different brand)?
Submitted: 5 months ago.
Category: Health
Expert:  Dr. Arun Phophalia replied 5 months ago.

Hello,
I am Dr. Arun and will be helping you today.

There can couple of reasons for an initial pregnancy test to be negative;

1) A urine pregnancy test has a lower sensitivity. So unless pregnancy hormone come to level good enough to be detected by the urine pregnancy kit; the test may not be positive.

2) Another reason can be that test may have been done too early. After the fertilization of ovum and sperm; this has to attach to the uterus (womb), which may take some days. After attachment to the uterus; the pregnancy hormone starts growing. So if the test is performed just before the attachment to uterus; it may be turn out to be negative.

Please feel free for your follow up questions.

I would be happy to assist you further, if you need any more information.

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Expert:  Dr. Arun Phophalia replied 5 months ago.

Just to add to the above answer;

There is a pregnancy called as ectopic gestation. In this the fertilized ovum attaches to ovary or fallopian tube or elsewhere instead of uterus. This may not raise the pregnancy hormone for significant duration and thus tests may come negative. This is not common but a possibility for negative tests. An ultrasound can detect it. Please read about it;

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Expert:  Dr. Arun Phophalia replied 5 months ago.

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Expert:  Dr. Arun Phophalia replied 5 months ago.

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Expert:  Dr. Arun Phophalia replied 5 months ago.

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