It sounds like her bedside manner left a bit to be desired, but honestly, it *can* be difficult to get good shots. And sometimes by the time someone else comes to have a look, the baby has moved to a more co-operative place. It isn't unusual for a full morphology scan to take a good long time.

The 20 week scan is important to take measurements of all the organs and limbs and to check that things are okay, and that's the main thing. Also, some hospitals and practices do have policies that they will not even bring up gender identification unless the patient does. That is something that you should really be discussing with your OB/midwife at the time of the referral. I'd be more annoyed that your OB/midwife hasn't really properly prepared you for what to expect from your scan, to be honest. Too often they are presented as almost a social visit with the baby when they are in fact serious diagnostic tests and the ultrasound tech is right to treat them so.