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ultrasound

How accurate are they when done at 11weeks, could they be about 2-3weeks off?
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3588173 tn?1357317184
Because at that stage babies all grow at the same rate
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3588173 tn?1357317184
Ultrasounds done before 12 weeks are extremely accurate
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3224409 tn?1356206827
Your first U/s is usually perform to c exact measurement of fetus from head to rump.. thus giving them exact weeks of pregnancy... after that u/s can change as some babies tend to grow faster and bigger and some tend to take time...

yes ovulation can happen later.. i myself had late ovulation with this pregnancy... according to my LMP my due date should be 5 march however its 12 march... and i was suppose to ovulate between CD14-CD18 but i ovulated on somewhere between CD23-CD25..
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153475 tn?1359471234
Not necessarily ultrasounds have a + or - 2 wk differential so you could measure on either side of that
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Avatar universal
There is a week apart from my LMP and ultrasound, does that mean I ovulated later?
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3224409 tn?1356206827
ultrasounds are exact.. because they are performed after measuring baby.. you can go off from date of LMP.. thats why u/s is done to confirm how many weeks you are.. i was suppose to be 14wks and 2 days on my first u/s but i was only 13+1...
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Avatar universal
no hunny uktrasounds measure how big your baby is...ultrasounds r exact usually...
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