I'm with you ladies, it's generally a sad/uncomfortable conversation. When people ask I simply say we are trying and change the subject back to them.
We had a group decide to TTC together ( thought it would be good for support...BIG MISTAKE!) and I am currently the only one not expecting. Bless them though, they check on me and ask for updates with enthusiasm but I asked them to stop,because replying with "not yet" was slowing killing me. They understood.
I continue to check on them and chat with them about their pregnancies and we have started planning a few showers.
Which brings me to another point/question... How do you guys handle close friends who are expecting? One asked me if I wanted her to stop talking about it, I said no of course not.... But I'll admit that every time I do chat with them (especially if I just received my monthly gift) I have a sobbing attack (privately of course).