NoNoNo - just reaching out with sympathy and lots of empathy, as know so much of how you're feeling and what you're going through.
I too had my second MC in a row back in July/August. First one at 7 weeks in May; second one was about 8.5 weeks- a MMC so i only found out at dating scan. I too already have two kids (aged 5 and 7). I was ambivalent about first pregnancy that MC'd (we took forever to decide to have 3); then realised after first MC that really wanted one and couldn't believe it when I got PG again so quick. But then that one MC'd too.
Anyway, all I can say is whether it's a PG you've been trying for for years, or whether it's a 'happy accident' - that's no predictor of how your'e going to feel when you miscarry. The loss is very hard - because it's not like any other. I lost my dad when I was quite young and it was awful, of course, but everyone around me knew it was awful - and me and my siblings were in the same boat and you draw so much comfort from those around you and from the symapthy you get etc etc. Miscarriage is a very lonely thing. a) either people don't know or b) if they do know, most expect you to get over it very quickly or don't really want to dwell on it - after all, they happen all the time, right??
On the practical side, you need to let yourself grieve - I spent so much energy trying to STOP myself crying and trying to carry on as if not that much had happened. Which was stupid as I just exhausted myself and then collapsed crying every evening when the kids were in bed. Also, your hormones are all over the place right now which doesn't help.
Anyway, I just want you to know that I'm sending so much sympathy. I know what you mean about seeing all those pregnancy women. They were everywhere after I MC'd. Still are! And families with 3 kids - suddenly they all came out of the woodwork too....
Hang in there. Take care. Don't make yourself do too much - it's still so raw for you right now. MMx