15 week ultrasound

I had an ultrasound today to check my cervical length since I've been having pressure pains and I'm high risk for my first coming early and the lady goes oh there's the baby's legs wide open and I glanced at the screen and she points to the legs then she said ok you're done and turned the screen off😑 I was hoping she would just tell me what it was but now I have to wait a week for my gender ultrasound. I didn't see anything between the legs so I'm hoping its a girl! Guess I'll find out in a week😒