Good luck with your scan Stars69 - isn't it cruel that they make pregnant women do anything on a full bladder!

My clinic suggested 2 good size glasses of water in the hour before the scan - which I think is much more sensible than 1.5 ltrs - which is basically the average daily recommended amount of water in half an hour!! That's crazy! Lynny, I reckon that yes, they are either dreaming, or they enjoy torturing people. Depending on bub's position, if they can't get a good enough read on the external monitor they do the trans-vaginal - which you don't have to have a full bladder for, but they like to have both options.