Hi megaminz!

I'm exactly the same and I feel like a bit of an ingrate, we'd been trying since January and now we've been given this little blessing and I can't seem to get excited. We haven't really told anyone yet though, and I have put it down to being worried everything's not ok. So I rang the doc on Thursday and begged to go for a dating scan which he'd prev. told me wasn't really necessary because we pretty well know our dates but was happy to arrange it to put me at ease. We go for that on Tuesday and I'm sure that'll make me feel heaps better!!
So in answer to your actual question, hopefully reality sets in around 8 weeks, like you I don't really have any symptoms either so nothing's really changed until we see that little heartbeat!!
And as far as people's response making you feel bad, I'm sure your reaction is completely normal and you can't let others get you down; especially cos they wouldn't mean to hurt your feelings!

Good luck with everything!!! I'll keep an eye out to see how you're going!