I went through something similar with my first pregnancy, too (at 13 weeks). First, let me say that I am so sorry and that I wish you the best through your recovery (physically and emotionally).
As for the D&C, it's pretty straight-forward. They will put you to sleep (mine was done in an OR, they aren't always), and you will wake up in recovery (if you are not fully knocked out, you may remember snippets of the procedure). When you wake you will be groggy and possibly a little confused/incoherent. Verify beforehand that your husband will be allowed to sit with you-mine wasn't there when I woke up, and they wouldn't bring him in-I cried hysterically and begged for him (still dopey from the drugs). I still feel it was cruel for them to leave me alone when I had just had my pregnancy scraped out of me. You will be bleeding, like a heavy period-this will last for several days, gradually tapering off. Once they verify that you are stable and your uterus has clamped, you will be sent home. The rest of the day, sleep. Even if you feel fine, sleep. I was tired and a little crampy, but mainly I needed to just rest and heal, inside and out. I took a week off of work, though by the next day I felt OK.
Something to watch out for-as my OB put it, a D&C is a "blind" procedure, and it is possible for some tissue to be left behind. This happened with me, and I wound up having a mini-miscarriage 5 days later-heavy bleeding and cramping for a few hours. Which brings me to another point-is it necessary to have the D&C? Is this your choice, or theirs? At 8 wks it is an option to wait it out and allow your body to purge naturally-avoiding the complications of surgery and washing your body with drugs. As far along as I was, hemmoraghing becomes an issue, and had I waited I probably would have had an emergency D&C anyway to control bleeding.
A side-note-your doc will undoubtedly tell you to hold off on trying again for at least a month-they say this for only one reason: they want you to have a period so that when you do get pg, they can date it more accurately. What they DON'T say is that after a purging (through MC or birth), your uterus is at it's MOST fertile and you are most likely to concieve. Some women feel they need some time to get over their loss-I didn't want to be forced to wait any longer than I already had and was PG again 6 wks later (he's 4 now).
Good luck to you in this journey-I hope that all goes well and that very soon your are birthing a healthy baby.
PS-I just checked your profile and saw you are in Bothell-if you are having your D&C at Evergreen, it is an excellent facility, and they do their best to make you fel relaxed-aside from the no-spouse thing.