Just had my 20 week ultrasound today and found out my baby is a boy!! The tech doing the ultrasound was taking forever measuring everything and taking tons of pics of the baby. I don't remember my previous pregnancies the ultrasound take so long this one was like 20 mins or more. Is this normal to take so long?

And I asked if the baby was measuring the right number of weeks (the last time it was measuring 3 days behind) and she said she wasn't allowed to say, so sends the images to my Dr to look at. is that normal for them not to tell you?