Ultrasound today!

I'm so nervous for my ultrasound today, I am roughly 9 weeks pregnant and I've tried not to get my hopes up to much. I had an ectopic and 1 miscarriage this year and so far this is the farthest along I've been. I'm guessing I'm so nervous for the heartbeat...I'm am really hoping that there is one! I know i should be positive but when lightening strikes in the same spot, it's really difficult to think otherwise ...BABY DUST PLEASE!