kitteh - hope there are some concrete answers for you soon - but then again, as we all know, sometimes we just don't get the answers we want! I'm usually thoroughly confused at some point in every cycle. :P
I just realized that the last time I was 8dpo (where I am today), I had a BFP. I don't feel the same as I did then. Didn't even think of testing. Haven't been temping consistently, as I've had a cold, have been breathing through my mouth and getting wonky temps anyhow. I also had a sudden onset of dizziness/nausea today which made me go 'hmmmm....' - but then again, my head is full of snot and it's making me dizzy. Dizzy = nauseous, so nothing to be excited about. I may or may not test in the morning. I'm not overly excited about it either way, which is just so odd.
I think my friend's recent tragedy just changed perspective for me. I'm more intent on taking things day by day, moment by moment - and less focused on end results. That's not to say I won't be sad when AF arrives, or elated when I get a BFP. It's just that today, I'm feeling ambivalent.