20 weeks & due date change?

irishblessings916

I know that the due date is just an educated guess, and baby will come when ready. But has anyone had their EDD changed after the 20 week ultrasound?

I had mine today and the tech said she is estimating Sept 5th. I had calculated Sept 6th. But at my 8 week appt baby measured 9 weeks. So my ob gave me the Aug 31st due date. 

karaszoo1

It really doesn't matter lol its a week .you could have a perfectly healthy baby at 38 weeks or be one of the poor unfortunate souls that goes 42 weeks. Like you said d baby will come when it's ready. They can have intrauterine growth spurts and measure ahead one ultrasound then the next time be right on track for the original date .i wouldnt fret if I was you :-) 

bsckgb7

Just because you are measuring ahead/behind doesn't mean they changed your due date.  Sounds like she was just saying baby was measuring x.  Most OBs don't change due dates unless baby is measuring more than a week different.

No more Miss!

I've never heard of it during the 20 week anatomy scan. 
I originally thought my edd was Sept 16, had a dating scan around 11 weeks, doc changed edd to Aug 21, that's a big enough difference for a change at a 1st trimester scan. 

irishblessings916

I'm meeting with my OB on Tues. I'll see what he says. Totally not fretting, just curious. 

gadzooks_3

Mine was changed at the 20 week, from August 6th to July 29th (but I still think of myself as an August bumpie, I just go to both boards now). The July date matched my LMP, and one other ultrasound, bit not the 7 week. When they looked at the notes for the 7 week they felt it wasn't as accurate as it could have been so we are going with the preponderance of evidence for July. I have dates for potential conception that match both so, who knows. It doesn't effect much bUT it puts the baby within one standard deviation of the mean instead of 2. The only way the EDD can matter is if your hospital or provider has policies snout hiw long you are "allowed" to go past your due date without intervention. But my OB pointed out you always have the right to refuse intervention and she prefers to move from evidence based decisions with more data than due date.

Curls919

liljabee said:

Mine was changed at the 20 week, from August 6th to July 29th (but I still think of myself as an August bumpie, I just go to both boards now). The July date matched my LMP, and one other ultrasound, bit not the 7 week. When they looked at the notes for the 7 week they felt it wasn't as accurate as it could have been so we are going with the preponderance of evidence for July. I have dates for potential conception that match both so, who knows. It doesn't effect much bUT it puts the baby within one standard deviation of the mean instead of 2. The only way the EDD can matter is if your hospital or provider has policies snout hiw long you are "allowed" to go past your due date without intervention. But my OB pointed out you always have the right to refuse intervention and she prefers to move from evidence based decisions with more data than due date.

You're still welcome here

I was a "Sept 13" mom but so many of us had our babies in August and some didn't have them until October, but we were still S13 no matter when the babies showed up!