First appointment not with an OBGYN?

I just made my first prenatal appointment online at a local obgyn, selected the reason as "pregnancy", and it's telling me my appointment will be with a nurse practitioner and not the actual Doctor? For my first appointment shouldn't I be with the doctor who is going to be seeing me through my pregnancy or...? I'll be 11 weeks and 3 days at the time of the appointment I'm worried I won't be able to ask the questions I need to or get an ultrasound or anything.