Pregnancy confirmation?

I am four weeks today but have known since 9dpo. So I went ahead and called yesterday to make a pregnancy confirmation appointment. She was looking up my information and I was waiting, expecting her to ask when my last period was or something. But she just said “the earliest I have is next Wednesday.” So I just said..okay sounds good. I wasn’t expecting to get an appointment until I was 8 weeks or so. Not going to lie I’m kinda relieved though because after a miscarriage I need all the confirmation I can get.

But what will they do at my appointment since I’ll only be 5w1day then?