3d/4d ultrasound question!?!?

Taylor
I'm currently 10 weeks 2 days pregnant And my doctor only allows one ultrasound the entire pregnancy and that's at 18 weeks! 😱 I'm about to drive myself crazy because I want to see my butterbean! Anyways my question is: I want to have a 3d ultrasound soon but I heard you can have them done as early as 15 weeks and find out the gender, how early did you lady's have yours and how soon could you find out what you were having? Thanks! 💕👣💙👶