@Disneyrules Hi, Disney, so sorry you're going through this! Thought I'd pop in and share my side too.
So I've had two D&Cs (sadly they're my only pregnancies). The 1st one I had the surgery in July (19th) and it was pretty quick. Luckily I was the 2nd person to go in that day which I think helped as I didn't have to wait too long and over think things.
I think the surgery takes around 20 minutes if that, and the first time around I was in a fair bit of pain afterwards (the sac was a bit bigger that time so might be why) the more I was awake so definitely grab some painkillers for when you're back home. They will give you some paracetamol during the op. which might help ease things off.
You might bleed lots afterwards and pass bits of tissue afterwards but it's different for everyone. That time I bleed for a few weeks and passed some clots during that time but I also had a lot of blood floating around anyway as the sac grew for a further 3 weeks, and then 3 weeks after that I found out about my mmc, so I was just a weird case as you can imagine.
With my second mmc in Nov. I had my op. in December and the recovery was so much better. The bleeding turned brown and was more like spotting after a day or two. It might have been that I knew what to except afterwards but even pain wise it was less which is always welcomed. I passed a tiiiny bit of tissue but absolutely nothing like previously.
I had a small (less than a mm) piece of remaining tissue which might have made things a bit slower, but I got AF around the 5-6 week mark so it sorted itself out and I've only just got my negative test (again, I'm the oddball), everyone is different.
Take it easy and look after yourself