What exactly happens at the 36 week ultrasound?

Lindsay
Hi girls, I'm 35 weeks this week... I go next Wednesday for my 36 week ultrasound. Just wondering, what exactly do they tell you? I have no idea how big this baby is, what position he's in, when to expect birth... Will they clear some of that up? I haven't had an ultrasound since the anatomy one at 19 weeks and so I'm super anxious!!! 😬😬😬😬Thank you