Anxious!

I don't get our first ultrasound until the 9th and that's a dating scan. Is it still going to be reliable at 10w 2d? I've always had my dating scans around 6-7weeks. I know after a certain point it's not really reliable because the baby starts growing at their own rate. The hospital had been super busy and that's the earliest they could get me in. Not to mention I'm ready to see and hear the heart beat!!