I had a Mc yesterday after a scan on Tuesday confirmed a mmc. Was extremely distraught all of sun/Mon/Tues as I kept bleeding more and more and seeing the scan was a massive shock. I was devastated but am coming to terms with it now. Actual MC was bloody painful but at least its out of the way. I was 11+4 but on the scan the sac looked empty so go knows when the embryo died.
Because there wasn't really anything there to see I think I am finding it easier to process mentally than if there was a baby shaped being that I could see. In general am trying to be positive and look forward to things like our summer holiday and ttc again. This approach is helping me get through this situation- I don't want to spend too much time thinking about what might have been.
In terms of advice on how to cope, I have no idea if my own methods would help you but this is what I am doing.
With regards to work I am lucky that I had only told my boss and one other person at work. However in your situation I think people would like being given some direction on how to behave, so an email from you might help or you could choose someone to spread the word that you don't want to talk about it.
In terms of the milestones, I really hope I manage to get PG again before the due date. However, I do try to think that this MC was out of my hands, it was always going to happen from the start and the family I end up with will be shaped by that event. I guess that is called being fatalistic about things? I don't know, its just how I work. I kind of take that from my mum who says if she hadn't had her miscarriage she would never have had my sister. Not sure if it will help you but it gives me some comfort anyway.
In terms of being happy for PG friends, I have been on the receiving end of someone who avoids at all cost other PG women and I don't want to be like that. I think it can be quite a selfish approach - this friend abandoned my best mate through her pregnancy and much of the first year of her sons life, until she herself had a healthy pregnancy on the way. I agree that a certain amount of self preservation is fine to start with (ie in the immediate aftermath) but after that you just have to face up to it and steel yourself. There are pregnant women and new born babies everywhere. It will be our turn again one day, we just have to ride it out until then.
Having said all this, my advice may be a bit insensitive for some and perhaps this is because I count myself as having got off relatively lightly. Later miscarriages are no doubt way more difficult and multiple miscarriages must be utterly utterly horrendous so I know I am no expert.
In terms of ttc again, I have irregular LONG cycles so we will be jumping back on the wagon ASAP. My gynecologist said there is no medical reason not to, they suggest a break for psychological reasons and to give your body a break.