Bing, I know u can't help but worry. But at least u r under close monitoring. Try not to think abt it until the day of the scan. KKH sees n scans many patients a day. So, the medical staff there r very experienced. If in doubt, they will escalate. Bbhp was scanned by a normal sonographer at Abt 12 wks, during NT scan. Then, dr George Yeo took over as that sonographer was not sure coz she can't see properly. Or when u register for scan that day, request if u can be scanned by a senior sonographer.