First US scan

So my first scan isn't for another 2weeks when I will be 12weeks. Iv had a pretty easy first trimester, only occasional sickness, just very tired.

BUT

I am terrified that I'm going to go to scan to find something wrong. I'm terrified of having a missed miscarriage even though iv had no symptoms of a miscarriage.

This is my first pregnancy and we tried for a while before getting pregnant.