Baby measuring big at 20 week scan, not fundal height. Experiences please :)

[~Gee_Whizzy~]

both my DD's were "big" for dates. with DD1 i had insulin dependent GD so that contributed to her growth. my scan at 36wks with her predicted her to be around 8pds. she was born at 39 weeks weighing 7pd 14ounces. DD2 was big for dates from day dot measuring 2weeks ahead always. a scan at 36 weeks predicted her to be 8pd 5 ounces and she was born at 38+1 weighing in at 9pd 4ounces.

I know many ppl say the scans are inaccurate, but in my case they were pretty close....well DD2 was a bit bigger than the prediction. Her head was big at 37.5cm

[*LittleMissSummer*]

I was told that at the 20 week scan that they dont usually get concerned unless the baby measures more than i think she said 2 weeks either way. My DS was a week behind in measurements, so was measuring only 18 weeks when i was 19 weeks at my morph scan which id say was before a growth spurt as he soon caught up and was a very healthy 8lbs at birth.

I'd say he recently had a growth spurt

FWIW, my sister was told her DD was 9lbs at 37 weeks, she went into spontaneous labour at 38 weeks and her DD was 7lbs 13oz.

[Saffy]

my u/s guy said they don't care if its measuring bigger, just if its a few weeks smaller than it should be. There's a long way to go and things usually even themselves out

[Novella]

DD3 was measuring ahead by 11 days at the 20 weeks scan (had a dating scan at 6w3d then she was ahead at the 12 weeks scan by 4 days then 11 days I think at the morph scan.) I didn't have GD and my midwife wasn't concerend in the least. DD3 was born after a spontaneous labour at 37+4, 8lb 6oz, my biggest by far but also my longest pregnancy, dd1 was 6lb 3oz at 36+2 and DD2 was 6lb 14oz at 35+6. DD2 and DD3 were on the higher end of the percentile for their size for gestation but I had straightforward vaginal births for all of them. Im glad my body knew they were ready to come as they could have been rather large if I got to 40+ weeks

Ultrasound scans can be innacurate for estimating birth size but can be useful for checking consistent growth, and as PZ said they can have growth spurts!