Hi girls, for anyone wondering about how correct the dating scans are, I had a scan last week and the midwife told me that taking your LMP and working out the due date, the level of accuracy of the dating scan can be 5 days either side of the calculated due date... just thought some of you may find it interesting, as I only have a 25 day cycle, there are 4 days difference between the calculated due date and the scan date estimate.