Freaking out

So my ultrasound results for to my dr and she wants to see me. The only information I could get on the phone was that I would need a 2nd us in two weeks. I can't get in to see her till tomorrow! The ultrasound tech told me things looked good and we saw a heartbeat. I am so nervous since the won't tell me the problem!! I have had no bleeding or cramping and bloodwork is perfect. I hate that they can't just tell me over the phone. I have a whole night of worrying ahead of me.