12 week scan potty shot. Sonographer adamant on gender

Attachment 30799 Attachment 30799We had a sonogram at 12 weeks and the lady was very adamant it was a girl. Her words 150% confidant. I understand it's still early and was curious if it could possibly change?

I asked her if so,she said she was very confidant based upon her side shots and the other shots she got.
Well our disc was empty, and we only got 4 photos none which were side shots.
I had to send my disc back in hopes to get our other "shots" and video she took.
So I do not have a side shot currently to show.

I asked right off for a side shot and she was scanning around and said if you give me a few minuets I can tell you what it is.
She was amazed by how clear my fluid was and the images were so clear.
I drink about a gallon a day.

But I'm just concerned it will change since it's so early.
My husband was convinced from the start it's a girl. He even said "told you" when she announced its a girl.
He says she was so adamant about it he believes her and doesn't think it will change.
I'm just a mama and will over think I guess.
I will say we found out my sons gender at 12 weeks and it looked nothing like her scan.