I have had 2 ultrasounds so far I am 24 weeks my 1st was at 9 weeks the 2nd around 18 and I am so ready for another ultrasound to see how big our boy is getting most people say the next won't be until around 30 weeks, I'm hoping that's true my last daughter I had an ultrasound at 27 or 28 weeks and another around 30 because I was dialating. I have gd and and large babies that come early, taking progesterone shots this time around and having a boy so I'm super worried about his size.