Make sure you read the comments too. My favorite, by C from This Sorta Fairytale reads:
The best way I've discovered to explain the sliding scale and my reaction to many pregnancy announcements is that while I *am* happy for the parents-to-be, grief about my own infertility is a much stronger emotion.Very well said!
On a slightly funnier note, I actually burst into tears one night when my Tamagotchi met the Match Maker and had a baby (If you haven't heard of them, they're little handheld virtual 'pets' from Japan). I think R thought I had officially lost it at that point, when I walked into the kitchen with the toy in hand and tears streaming down my face and said "See! Even my Tamagotchi can get pregnant! How come I can't?". I'm amazed and thankful that he didn't burst out laughing, as I did a couple of days later thinking back on it.
Oh, and as I mentioned above, it's Zee's Bloggiversary today, so make sure you head on over there and give her some Bloggiversary lovin'!