Hi Sonybear,
I don't use this site very often, but do tend to come on here at the times that you have described, just when you think you're getting somewhere and someone hits you with some 'happy news' and it feels like you're right back to square one.
My best friend had her first baby in October, that hit me hard and it's been 3 years since my third and final treatment cycle. Then yesterday she phoned me and asked me to be Godmother to her little girl. The part of me that loves her as my best friend was delighted to be asked, but the part of me that is unable to have children of her own just wanted to scream - I'm trying very hard to learn to cope with this and it would be a lot easier if everyone would just leave me alone!
You're right, a bubble would be nice, to cushion the blows and allow us to live in blissful ignorance!
Once again, with a new year approaching I am hopeful that this will be the year where the pain eases a little,and I can once again be the person that I used to be, before infertility came along and suffocated me.
You're not alone, and although it doesn't stop you feeling so sad, it is comforting to know that what you are feeling is normal and there are other people on here that feel it too.
xx