Insurance question (U.S.)


I’m going to talk with my doctors office and insurance, but I didn’t know if anyone here could answer my question!

I’ve only been billed for my first appointment (visit, ultrasound, blood work, urine test), blood work for a quad test, and my anatomy scan. I assumed I would just get billed for everything after the baby arrives. Does anyone know why I’ve been billed for some services but not others?