Terrified for Anatomy Scan

So tomorrow is my anatomy scan and I am petrified. I had a miscarriage in August at 7 weeks and now I'm at 20 and everything is looking good. All of her tests have come back that she's healthy, her heart rate has been in the normal range both times, but I'm terrified they are going to look tomorrow and something will be wrong. Her dad isn't in the picture so I'm going through this pretty much by myself. I just love her so much already I won't be able to stand it if something is wrong...I just want tomorrow to be over although I know I'll be so happy and excited to see her again...so many emotions...