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how accurate are first trimester ultrasounds?

I want to know when i got pregnant.
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4562329 tn?1363818660
It is pretty acurate when they tell you when you got pregnant.
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Avatar universal
yep first one is the defiant acurate what that lady told is ur due date etc...it measures how big ur baby is...
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153475 tn?1359471234
they are the most accurate of any ultrasounds done later because during the 1st trimester all babies grow at the same rate
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