That’s what I think as well. Sometimes I wish I didn’t have this external scan as it made me worry maybe for nothing. I just wish I didn’t measure behind and there was a heartbeatInternal is 100% more accurate. My hospital won’t scan externally before 12 weeks as it’s not accurate as the baby is so small. Also in early scans my dates have always been out and then at 12 weeks gone to what I think they are.
X