hun so sorry for your loss.
I had a missed M/c at 10weeks- and was so desperate to start trying again I opted for a D&C, even though I thought maybe I should let it happen naturally, but I didn't know how long that was going to take. I then fell pregnant on the second cycle so I was lucky.

I'm not sure how long things take when not having a D&C but maybe someone who knows will answer soon.