20 weeks ultrasound and sonographer

Hi everyone! I went day before yesterday for my 20 weeks ultrasound in kkh. Since its my first pregnancy, I'm a bit nervous as the sonographer did not reveal anything about the baby's development. I asked her two/ three times after completing the ultrasound about the baby if everything was normal. She said I can ask about it only to my gynae on my next appointment. The only thing she told me was the baby's gender. Is it normal for the sonographers to be tight lipped about information on baby's development? #1stimemom #advicepls