Scared/nervous

I’m currently 11 weeks and 2 days i was due to have my first ultrasound on the 2nd which is a Thursday but when I got there they told me they are only doing ultrasounds on certain days and Thursday is not one of those days. She told me I would have to reschedule an ultrasound on my next visit which is the 9th. I was so sad that I couldn’t get my ultrasound and ended up crying in my car for awhile before I drove home. I have been pregnant before and that ended up in a miss carriage when I was pretty far along so I am very nervous and scared something could happen this time. The appointment on the 9th is for an ultrasound follow up, pap physical, and lab results and I hope she will Atleast let me hear the heart beat for the first time so I will know everything’s ok.