Wow, not sure if it’s just different because of where everyone lives, but I’ve always been referred by my gp for a dating scan at around 7 or 8 weeks gestation. This is my 3rd baby, and I am praying that if all goes well I can go see my gp at about 6 or 7 weeks and he will refer me for my dating scan to be done within a couple of weeks from then, putting me at about 9 weeks at the latest for the official first ultrasound. My obstetrician has a small ultrasound machine in his exam room as well, and he checked for the heartbeat each time (not an official ultrasound) I had a check up with my previous pregnancy. We did pay for the dating scans out of pocket so that might just be it!?