Definitely ask! I had my first at 19w4d and that's when we noticed my cervix starting to funnel and decided to watch it closer. Without that u/s, and the subsequent follow ups, I highly doubt I would have carried these babies past 24 weeks.
Plus there was a significant size difference between my two at the time (and for about 2 months afterward). It turned out little miss caught up and it was nothing to really worry about, but it could have been.
I started the growth checks after my "big" U/S at 20 weeks. The first was 4 weeks later (at 24 weeks), then another 4 weeks after that (today at 28 weeks). Now they want to see me every 2 weeks...
Re: Growth U/S
Definitely ask! I had my first at 19w4d and that's when we noticed my cervix starting to funnel and decided to watch it closer. Without that u/s, and the subsequent follow ups, I highly doubt I would have carried these babies past 24 weeks.
Plus there was a significant size difference between my two at the time (and for about 2 months afterward). It turned out little miss caught up and it was nothing to really worry about, but it could have been.
My growth scans started at 23 weeks. I had them every 3 weeks until 32 weeks when the babies were too big to measure.
I think before the growth u/s, they measure in terms of weeks? Not sure.
I would ask at your next appt.
I had one at 20w then again this morning (should have been last week but things got screwy with the holidays)..