I know it can get frustrating but just remember due dates are estimates and some babies need a little extra cooking time.... And that's OK. It will be over soon and you will have your little in your arms!! I just tried to think it made the day I met my daughter that much more exciting because the anticipation was built up that much more :-)
Its awful. I think I'm starting to get depressed. :(
Hang in there. I know exactly how you feel. My daughter was 13 days over due. Just remember you won't be pregnant forever and take this time to relax and sleep before baby comes :-)