Welcome Misstiggiwinkle, I know exactly how you feel, I had an EMC in February so I've been pretty cautious with buying stuff and how I feel mentally. A friend told me she bought everything as soon as she got her positive test, gosh I wish I could be so positive. But our reaction is our brain protecting us.
I'm now on bedrest so I feel like I've taken a big step back away from the EDD feb 8th, but I'm trying to remain hopeful.
What I've done is create wish lists at mother care and john Lewis, with everything we'll need, and as we get closer and more confident I'll just start hitting that order button. I think the lists are all ready now.
In other news I've started a bedrest thread if anyone wants to join that's on bedrest.