Its so unnerving and by the time scan comes round i am already anxious and panicing. I worry that there is no baby (i imagined it all) i do also worry that there will be something wrong or no heartbeat... Im pretty sure that with my older 2 when they started the scan they had the sound up so almost immediately you would hear the heartbeat which they would then point out. They would then turn it down, do their stuff before giving a more indepth view to us and pointing things out, taking pics etc. I know with Ds there was no sound at scan so only saw heartbeat and didn't hear it til appointment at 16 weeks...