Sara... yes 4dp6dt now, and nothing. I was so hoping (as I do each time), that this would be the cycle that I would feel something in the TWW, maybe a twinge would be great, but nothing. In fact I've been making my mind make up twinges, and now can make a twinge anywhere in my body just by thinking really hard - it's actually really quite funny, because I didn't think that it would be possible, to actually make a pain!!
You certainly sound like you and your FS have got a really good plan happening. I agree with most of those things, but I don't know anything about Filgrastim infusion, so can't help there. Also, if you are going to do an FET with your perfect embie, then I'm surprised about the Pregnyl boosters, as I've only used them on stim cycles and not FETs. Maybe others can weigh in there?
Does your clinic have a counsellor? I never thought the ones I saw were much help to me (I find the people here on bubhub better), but my DH and my sister (who donated her eggs) liked going to the counsellor, as they prompted all the right discussions.