Anatomy scan

Chandler • Maybe just happy🌻
I had an early ultrasound at 16 weeks, and the tech was 100% sure she was a girl. Well of course I got all excited and bought like all the clothes she will need up too 6months. But now I have my anatomy scan in a few hours and I'm so scared there going to tell me it's a boy after Iv bought so much lol. Has anyone's scan been wrong so far?