measuring bigger Olivia n Shaes momma 2 kids; REDWOOD CITY, CA, United States 476 posts
6th Jun '14

Im suppost to be 20 weeks today and due oct. 24th but according to ultrasound and measuring im 2 weeks ahead, is this normal? my dr doesnt want to change my due date. 

Sebastian Blake <3 1 child; United Kingdom 3646 posts
status 6th Jun '14

Yeah the further along you get the more variable growth is between babies so it's more accurate to stick with the dating u/s.

user banned 1 child; ., ., Afghanistan 14887 posts
6th Jun '14

Yes it is normal for babies to measure ahead later in the pregnancy, but usually if it is a difference of two weeks, they change it. 

ⓖⓡⓘⓝⓒⓗ 2 kids; Azeroth, .., United States Minor Outlying Islands 14768 posts
6th Jun '14

Ultrasounds can be off. They use them around 12 weeks to confirm dating and sometime after that its no longer as accurate.

Pole lizard Due July 1 (girl); 2 kids; My house, VA, United States 1611 posts
6th Jun '14

It's normal. I have been measuring 4 weeks ahead consistently and the past 2 times have leveled off to measuring 2 weeks ahead. Measurements can be off. Nothing to worry about. 

Squeaky McGee 3 kids; 3 angel babies; Indiana 74404 posts
6th Jun '14

It's normal for the measurements to be off by a week or two in either direction.

**Blessed_Insanity** 7 kids; Wyoming 19395 posts
6th Jun '14

Yeah ultra sounds after so many weeks are not very accurate. I know with my last pregnancy, my son ALWAYS measured 2 weeks behind and small, but that was def not the case.