I just turned 30 weeks, & at my last doctors appointment I had my anatomy scan & they scheduled me…

I just turned 30 weeks, & at my last doctors appointment I had my anatomy scan & they scheduled me for 3 weeks later (I'll be 32 weeks then) anyone know what I should expect?

FTM, & my doc is usually really short with me at my appointments. although I had an ultrasound last time, when I went in the exam room to talk to him his phone rang & he was talking on the phone the whole time the clueless nurse tried to explain everything to me. 😒😒