Freaking Out

To start off, I haven’t had a period since 09/28 so GP thinks I’m about 9-10 week but I had all negatives in October and a negative blood test November 4 so I have no ideas for sure. Well now I am for sure pregnant, test finally turned positive at doctors office, I’m freaking out about everything, I’ve had a few miscarriages. I don’t know but I’m worried that something is wrong and I’m going to miscarry again. I haven’t had an ultrasound or even gotten an OB appointment, and I have to wait until Monday to call AGAIN. Any tips on how to keep from worrying so much? I would gladly appreciate it.