Early gender scan?

So I’ll be 15 weeks Tuesday. That’s my next appointment but I don’t think it’s an ultrasound just a regular check up....so should I pay and get a early gender scan somewhere or wait until my anatomy scan? (Which I have no idea when it’ll be but they been making the appointments far apart due to the virus) I am dying to know what my baby is!! I want to go start shopping lol but don’t want to waste $100 if I’m going to be finding out in a couple weeks. What would you guys do??