Ultrasound after miscarriage?

The ER who confirmed my miscarriage scheduled me for an ultrasound. The Paper says for dating/viability. And he still checked off that I’m pregnant. Is this normal to go for an ultrasound after a miscarriage?? I don’t want to go and I feel confused and sad. Any comments would be appreciated.

UPDATE: I’m sitting in my car crying like a baby after the ultrasound. Just hurts like hell to know there’s nothing there.