I just realized my "big" u/s is at 21 weeks...I'm tempted to call & reschedule. Apparently nobody (myself included) did math correctly at the hospital after my NT scan >.<
I guess I'll just ask my OB when I see her in a week if she thinks we can bump it up.
Re: Math Fail
Scratch that....19 to 21 weeks!!!
I don't blame you. Mine was scheduled for 21 1/2 weeks and I asked my OB if I could move it ahead a week. I feel better having it done in my 20th week in case anything needs to be repeated. It was an easy phone call to the hospital to reschedule. I was worried I wouldn't be able to.
If you can't reschedule, try not to worry. I have heard the same thing pp have said. Anytime between 18-22 weeks really should be fine.