15+5 scan - looks pink, but has anyone seen 3 lines go all the way back?

Hi all! I received an ultrasound today more to check me than the babe, so pics are not the best quality. I'm pretty sure we're having our third little girl, but saw the 3 lines going all the way back to the bum in one of the shots. I've never seen that before - is it common? I've heard of the hamburger and the turtle, but this looks more like an insect!

It does look like a girl. I have 3 girls too! I know you were hoping for blue so I'm sorry about that but 3 girls are pretty groovy too.

It looks a lot like the girl shot we got at 16 weeks. At least the "front" part. I dunno why it looks almost mirrored toward the back. But I am thinking girl for you.

Girl. she will love her sisters