First time confusion and panic

Found out I was pregnant on Christmas eve and had first doctor's appointment on the 31st they did nothing just said ok I'll tell the midwife, they didn't even give a rough due date or anything (i think I'm currently 6/7 weeks, but I can't use my last period date as I stopped ovulating for a few months and caught the 1st time i started I ovulating again). Booked in for my first scan on the 30th on Jan but feels like we are waiting for ages just to see if the little prune is ok. Any tips or advice on how to stay calm until the first scan (I've previously had 3 miscarriages so a bit paranoid with this one). Also do you normally have a midwife appointment before your scan or is it normally after?