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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How Can Pregnancy In Weeks Be Tested Accurately?

i just want to ask, my last period is jan 3 the firs day. and then i had a contact, i made the test using pregnancy test last february 11 2017 and it s negative then i tried again feb. 21 and now it s positive.is it possible it happened like this?? how i calculate the week of my pregnancy. please answer. thank you si much
Wed, 4 Apr 2018
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OBGYN,  's  Response
Hello,

First of all, do not panic. The reason for first pregnancy test negative and second pregnancy test positive can be as follows-
1. Delayed ovulation and conception.
2. If the first test is not done on morning's first sample of urine, diluted urine can give false negative results.
I will suggest you get an ultrasound done to know about the viability and exact gestational age. It will help you to get a clear idea about the number of weeks of pregnancy. Usually, expected date of delivery is at 40 weeks of pregnancy.


Hope I have answered your query. Let me know if I can assist you further.

Regards,
Dr. Purushottam Neurgaonkar
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How Can Pregnancy In Weeks Be Tested Accurately?

Hello, First of all, do not panic. The reason for first pregnancy test negative and second pregnancy test positive can be as follows- 1. Delayed ovulation and conception. 2. If the first test is not done on morning s first sample of urine, diluted urine can give false negative results. I will suggest you get an ultrasound done to know about the viability and exact gestational age. It will help you to get a clear idea about the number of weeks of pregnancy. Usually, expected date of delivery is at 40 weeks of pregnancy. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Purushottam Neurgaonkar