Gender at 13 weeks

So before my ultrasound today the tech asked "do you want a boy it girl" I want a girl very badly, so she's doing the ultrasound and I asked her to see between the legs she told me she couldn't tell me what it was (which I knew)  but I said I don't see a penis she said "I think you'll be getting what you want"😍😩 but now I'm scared that at my 15 week ultrasound (which is when I'm suppose to find out) that they're gonna tell me it's a boy. It just doesn't feel real.