Getting really annoyed we haven't had the Anatomy ultrasound yet... 20 weeks already-- RANT

I had an appointment with my midwife a couple weeks ago and she gave me two different options of where we could have our ultrasound. I picked a place and she told me she'd send over my information and they will give me a call and schedule me. It's been about 3 weeks and I haven't received a call yet. I wasn't 20 weeks at the time so I wasn't sure if they're the kind of office that requires you to be at 20 weeks. I haven't contacted my midwife yet because I've been busy with other things but I'm just really annoyed and disappointed that I have to deal with all this anticipation!!
The thing is, I have a STRONG feeling she's a girl, I'm 100% confident. But nobody else believes me which is irritating. I've already started purchasing girl clothes but everyone else is holding off because I "don't know for sure." 🙄 And then people keep asking me when the ultrasound is and I don't even know. It's so frustrating!
I'm jealous of everyone that's already had their ultrasound early. 😭
I know I really shouldn't stress out about this but for some reason it's really stressing me the hell out. I haven't even been using this app lately because everyone is posting about their ultrasound and I'm pathetic and emotional and jealous. 😩