When my mother went to see what I was she was told I was a guy. Throughout the pregnancy they still said boy. I came out a girl and am now 16:) ready for my boy. Same thing happened to my aunt, she was suppose to have a girl two weeks ago, came a week early and was a boy. Technology isn't always right.: )
My tech was iffy about mine too. She said it was loijing like a girl but i has to xome back to check. My sisters was a girl until she had a boy instead lol
It is possible. My second son was a girl at the gender reveal. :) Lol I was 32 weeks before he cooperated and I found out for sure.