I should have been 11 weeks this week as well. I was given the same options as you, and at first decided to wait it out -- I like to try and take natural options whenever possible. I waited 5 days and couldn't take it anymore. I miscarried naturally a few years ago and it was quite painful, not to mention a big mess....and the thought of waiting for that to happen and knowing it could happen while I was at work, at the gym, at the grocery store -- anywhere! -- drove me nuts. Also, I'm leaving the country next week for vacation and the last thing I wanted to worry about was miscarrying and bleeding in another country, or having complications.
Long story short, I called last week and they got me in for a D&C. I was VERY nervous, but the procedure went well, I was completely asleep and afterward they were very, very good/considerate about pain management and making sure I was okay. I had no bleeding afterward -- just some spotting that didn't even fill a pantyliner. They also gave me a prescription for 800mg motrin and hyrocodone. I don't think I was ever in enough pain to warrant taking the hydrocodone, but I took it anyway because I was on medical leave from work and just wanted to feel numb. I know this sounds strange, but oddly enough it really helped with the emotional pain....I was still really sad, but it made me tired and out of it so I wasn't hysterical or crying all the time. For the first two days after the procedure it *really* helped me not obsess over the situation.
Anyway, after having a natural MC and now a D&C, I would probably go for a D&C again. It's more expensive, but the process of having a MC is already so physically and emotionally painful, having the D&C really makes the whole process easier to bear I think. I bled very heavily for 5 weeks with my natural MC -- it was awful. I had also considered taking the medication they offer to induce the miscarriage, but sometimes women still have to get a D&C because all the "products of conception" are still in the uterus. If you've already been bleeding for 2 weeks, I would recommend the D&C to get everything taken care of.....then you're not waiting and wondering every day if you've passed everything or not, and then you can just move on.
Sorry for my VERY long response, I just wanted to help. Having agonized over this decision myself, I wanted to share the information/experiences I have. Hope it helps, and best wishes with everything. xoxo