Anatomy Scan Anxiety

Today I had the anatomy scan done. I've been so anxious about this scan since it was scheduled two months ago. My little one was folded over, butt up and would not move. They said they just couldn't get a clear picture of the organs or face and that I'll have to come back to complete the scan. I just don't know how I'm going to get through another month of waiting. Doctor said it's typical and that about 80% of the time the organs aren't developed enough at 19w to do the scan.

Anyone else had to go back to complete their scan? How many weeks were you the first time and then the second time? Positive stories please, I'm trying to ease my anxiety not heighten it.