I thought I saw 2 lines when I was sneakily trying to detect the gender at my Team Green ultrasound! I wonder if I just missed one of the lines or if I was seeing something completely different!
My very technical and not friendly ultrasound tech said the 3 lines are the labia. She said in a monotone voice, "there is the labia so it's a girl". My husband and I still laugh about it... Just a weird and unexpected way to hear it's a girl....
Re: three lines?
If you look closely it looks like 3 lines. I would say the vulva or whatever makes up the lines.