Ultrasounds

Christina
On Monday I went to have an ultrasound done to find out the gender of the Baby so the tech said we are having a Boy! Wich we were really excited about being that we have daughters. Then the next day I get a call saying they wanted us to come back just to confirm. So I was confused and upset. So I went back today and after being there for two hours I still don't know the Cord was in the middle And couldn't determine. I need feedback has this ever happened to anyone else?