I'm so sorry you have had to suffer through this. I'm in a similar situation to you and know how awful it can be.
I have a 15 month DD who was conceived soon after my first m/c in 07.
I think I had two chemical pregs in Dec 08 and Feb 09 and I had a d&c two weeks ago after a missed m/c.
In a way I have found dealing with this m/c to be worse than the first one. I know DH and I can produce an awesome baby, so it's really driving me bonkers that the pregnancies aren't sticking.
I have an obs appointment next month (on my birthday of all days!) to find out the results of blood tests and chromosomal testing. With both my miscarriages the baby stopped developing at the same time which is making me think that it may be chromosomal??? Suppose we will find out in a couple of weeks.
Like you I don't want to be around people who have two kids. I went to a kids clothing warehouse sale last week and was shooting daggers at people who had more than one child! Just like I used to shoot daggers at pregnant women when I couldn't get pregnant initially!
With my mothers group I have taken some time out, but DD and I have also been sick, with the flu (yeah, just what we needed now!!!). In mother's group nobody is on to number two yet but the conversation always swings that way about when to try for number two. Not a conversation I even want to listen to at the moment! If you need time out from mother's group, definitely take it, you can always make up some excuse about your DS being sick, that's what kids are there for aren't they???
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