Bummed by 20w dr appointment

I was so hoping to be able to announce the genders of our twins after today's appointment. Well, that's not the case. I have to wait another 4weeks to have an ultrasound done again. Both of them had their legs pretty tight together. The one I believe she is right on, that it is a girl. The other one, it was too hard to tell, but she believes it is also a girl. They wouldn't even print it off for us. I'm just so bummed right now, and sick of everyone asking if we know the genders yet.