Today's the day

Elisha
At 230 I will be having my 1st scan. I should be 6+1. Referred by the miscarriage unit due to previous pregnancy. 
Tbh I'm happy that I'll get to see my baby today but it doesn't mean much to me as last time I had a scan the heart beat was there they said it was a healthy baby. A day later I had a miscarriage 😞 
So I'm abit confused as to why they do early scan because it don't really mean everything is ok. 
Trying to stay positive not having much luck today