My first ultrasound

My first ultrasound is tomorrow at 11:30. I've been in for a urine test & blood work, and they verified that I was pregnant. According to GLOW, I should be 9 weeks 1 day tomorrow. I'm so scared and nervous. I just hope and pray that everything with the baby is okay (especially because I miscarried at 6 weeks last November). Was anyone else a wreck for their first appointment? What should I expect?