iWork '09 Pages and Lion Autosave problem

[enlightenight]

I have a document which is over 50 pages and which I'm one hundred percent I saved successfully the changes I've made last night. But with a great disappointment I found my document was changed 3 days ago and nothing since then.

I know I've wrote at least 3 more pages after that and I'm now really mad. I even checked the timemachine backups and you know what? Even though the yesterday's backups says the same. I'm about to lose my mind, it was a story which I was writing and I don't even know what I've written now and I'm about to cry - literally.

What can I do?