Gender surprise

Avery • 27, married, TFAS
I am so in shock!! Went in for anatomy scan today, and I was so sure it was a girl!! But lo and behold, it is a little boy, being pretty obvious with his parts!! I am super excited, but wow I am so surprised too! I was so sure it was a girl lol! Has this happened to anyone else before? 
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​-also I know it's sex, not gender, but I thought "sex surprise" would be a misleading title lol :)