Hi there, yes we nearly all feel like this. It comes up as a topic often as it seems there are waves and suddenly EVERYONE you know, work with, are vaguely related to, went to school with is pregnant. People on here have avoided baby showers, christenings, reunions, parties etc. if they knew the sight of too many pg women would get them down.
I was told of 3 unrelated sets of friends on one night this month. It DOES get you down and if your friend can see past her (understandable), excitement for a moment, she'll realise how hurt you are. Do you have a 3rd party who could discreetly say, 'boy it must be really tough for Terri?'. The thing is she'll assume you'll be next and thus think she's including you early vs. rubbing the salt in.
If she carries on for too long you might want to say something simple, 'I'm genuinely happy for you but finding it tough right now'. Also, being horribly practical, once pg she'll want to chat to others who are pg in tiny detail about it all. Like ttc, being pg is something best understood by others in the same boat. How about buying her 'What to Expect When you're Expecting' ? It's a great, albeit factual, book and covers everything she could ever want to know
There's no reason why it can't be you next.
Good luck with your tests in November.
Debra