Hello, soured, so sorry to find you here as well
It is heartbreaking when this happens, I don't think that one could crash any harder after being on such an emotional high for the last few weeks.
From my experience, it will be really obvious when you do pass what's remaining of the pregnancy - my last mc happened naturally, and after a few hours of bad cramping, it all came out, and there was no doubt about what it was 
However, it's different for everyone, unfortunately, this is one of those things where most of the time, all you can do is wait and see.
If you are going for the medical management, at least you know when it's going to happen, and you will be under care all the time. The knowing when and how can actually help a lot, sometimes it is a relief to know that at least the physical part of it all is over, and you can focus on healing.
You might want to stock up on painkillers and extra-thick sanitary pads. And chocolate.
Take as much time off work as you need to, no point pushing yourself to go back before you feel up for it.
The next few days/weeks will be tough, I'm not going to gloss this over. Apart from the physical side of things, the emotional rollercoaster can be brutal.
But I can promise you, there will be light at the end of the tunnel at one point, it really does get better. Time is your ally here.
Don't push yourself, give yourself plenty of time to rest. Again, everyone is different in dealing with the aftermath. For my first mc, all I wanted to do was to curl up on the sofa and not see anyone. After my second mc, I baked one bread after the other and spent a lot of time with garden work.
Just try and find out what works for you, put yourself first and be kind to yourself.
If you do choose to talk about it with people, you will most likely find that there will be quite a few who have gone through this themselves. I was amazed at how many of 'us' are out there! (Making it sound like some secret club now, but sometimes it feels like that).
Sorry for the mammoth post, I really don't want to sound patronising, sorry if I do!
I'm in limbo, too, at the moment, just waiting waiting waiting. I'm not bleeding at all and have no other symptoms yes, no idea what is going to happen and when. Having another scan next week to check what's going on, they'll probably discuss options with me then.