D and c Saturday

Dee
I'm scheduled for the morning because my last ultra sound shows I have some tissue, about 4cm left inside. I miscarried late June.  Misoprostal didn't work.
I got my peroid a day ago since. Today, what seemed like a blob, came out while I peed. Was it the tissue or just peroid clots- who knows.
I will be sedated for the d and c. My question is, do they do an ultra sound the procedure or just straight to d and c?
I will ask of course the day of, but curious now