5 weeks 3 days ultrasound?

I am posting this here because I think early ultrasounds are only a thing for patients with high risk and a REI clinic? Sorry if this is the wrong group to post?

After 2 x MCs and one chemical, and then a long time to conceive again, I am now pregnant on my fourth round of medicated IUI! My HCG numbers have been doubling well (6k today) and my RE scheduled me for a 5 wks, 3 d ultrasound. I am assuming it’s too early to see much? They do lots of early testing mostly for reassurance but I also think it’s to check for multiples (I had 3 follicles and a trigger).

Has anyone else done early ultrasounds? What can I expect? I don’t want to freak out with an incomplete result.