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08 Nov 2006

19 wks preg but baby is 18wks GA how??
Hi there, I'm confused about my baby's gestational age, according to my LMP, I'm 19 weeks pregnant on Thursday but the ultrasound I had on Mon. 6 Nov said my baby is measuring 18wks gestational, how the hell can that be? Should my baby not be somewhere round 17 weeks? Does this mean I'm gonna have a huge baby that nappies won't even fit on?
Answer 608 views
Expert
GynaeDoc
gynaedoc

01 Jan 0001

If you are 19 weeks on Thursday then you were 18 weeks and 4 days on November 6th. The ultrasound is only accurate to within 3-4 days.

Best wishes
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