Kylie, what you are feeling is so completely normal hun. After I lost Joshua, I felt like I was so alone, not one word anyone said made me feel better. After all, we lose such a big part of ourselves, it's like a big gaping hole.
I know exacltly what you mean about thinking/saying 'I would have been so many weeks'. My due date is on 12 Feb 09 and almost every week I remind myself of how many weeeks I would have been along. My psychologist told me it's completely natural, as your body still thinks it's pregnant, and the day you stop feeling like this will be on your due date. Then, in some part, a sad chapter can be finally closed.
Big warm hugs to you hun , I hope you continue to feel a little bit better every day, I know we'll never forget.
Love
Beata xxx