Ultrasounds

Shelby • 28✌Married 💍Addyson Izabella 1.29.17 💜Ansleigh Ione 2.17.19💜 Ayebrum Izaac 11.20.20💙
So why is it that I got an ultrasound at 7+4 but my dr hasn't mentioned one or want to do another one until the gender at like 20 weeks? I would think that I would get atleast 1 ultrasound between the 2! I'll be 12 weeks in 2 days.... Did you ladies have to ask for multiple ultrasounds?