Ultrasound- Gender?

Ivy
So I just had my anatomy scan at 19 weeks. We were trying to find out the gender but my baby had it's legs crossed the whole time and didn't make it easy for us to check. The u.s. tech said it's an 80% chance that it's a girl because supposedly we would be able to see something if it were a boy, but I feel like it could have been covered by its legs. Should I just trust that it's a girl or should I try to ask my doctor for another ultrasound order? How would I ask? I just know I'd be so mad if I spend all this time thinking it's one gender only to find out it's the other. I've already told everyone it's a girl. 😕