This may sound weird

We found out a couple weeks ago that were having a boy. But then my grandma said she had a dream that I was i having a girl. And I always thought those kind of dreams were real. Then I started looking at the ultrasound, amd the penis looks weird. Like, almost a zig zag shape. my 1 years olds looked like a legit penis in his ultrasound. So, my question is, that its not very likely for them to mess up during a gender ultrasound, right?