3d ultrasound

I finally made an appointment today to have a 3d/4d ultrasound done. The appointment is on Monday, November 10th @ 3pm. I cant wait! After talking to Tanna the other day, and joking about it at my shower... I'm starting to get nervous that I have bought all of this pink stuff and have only had 1 sonogram telling me this is a girl. Now dont get me wrong, she said she was 95% or 98% sure... cant remember which, but I would like some more reassurance. :)