Have you tried a bit of meditation, SJ? It might help you to relax a little (and pass some time, LOL!). Plus, as I said to Ren when she was in your position not too long ago, I have heard that bubs will come along once you have a certain peace about things. Meditation can be fantastic for getting yourself into a calmer state of mind.
Are you still worried about the birth? Do you think you need some more debriefing? Do you have someone you can talk to about any fears/feelings/aprehensions you might have about labour and birth?
Are you into crafty things? (Like scrapbooking, cross-stich etc?) Sure as you start something bubs will come along before you have a chance to finish Can you make some plans to go out for a hot chocolate or a frappe with a friend or member of your family? How about cooking? It could be handy to have some meals in your freezer for when bubby arrives (and s/he WILL be arriving any day now!).
I found when I went over with Natty, it was much easier to deal with things if I kept busy. It was around Christmas time so I occupied myself with some Christmas baking.
It really sucks going over your EDD, and no matter how much people like me tell you to relax and rest up, I know from experience it is just impossible. So my recommendation, babe, is to do something you really like to do and get your mind off things as much as possible. And try some of that meditation stuff - visualise your body getting ready for the birth, your cervix opening. Visualise holding your slimey, beautiful, freshly born baby in your arms and the absolute joy you will experience when you meet him or her for the first time. It will be very very soon.