Glucose test and 3D/4D ultrasound on the same day?

My obgyn scheduled my glucose test and 3D/4D ultrasound on the same day and I was just wondering if anyone else has ever done this. I'll be drinking the glucose drink 30 minutes or so before I leave to the appointment and then when I get there they'll take my blood and then do the ultrasound. I'm just worried all the sugar in the glucose drink will make baby too active and the ultrasound will come out blurry. I've been excited about this ultrasound for months and just really want it to turn out good.