Oh Thel, my heart goes out to you. This is such a long process for you and I'm sure you just want to be able to move on and begin healing. Plus, you are probably feeling a bit trapped now that your body is so unpredictable. If you are like me, you don't want to experience this even in public and are now locked in your home. I can't stress enough to go get the D&C. You gave your body ample time to do this for you and now you run the risk of infection if you don't pass the sac soon. If you want to get pregnant again, you want to avoid infection as much as possible as it may creat scar tissue and lower your chances. Ask them to put you under (which they are usually very good about) and it will be less painful and less bleeding than what you have already experienced. It is quite a safe procedure.
I will keep you in my thoughts and prayers. I would have been 11 weeks today...and our babies also died in the 8th week so you and I have a lot in common. Hang in there.