iPhoto pictures disappeared?

iPhoto pictures disappeared out of nowhere? I had thousands of them, all GONE! I tried EVERYTHING. I restarted my computer, I tried searching in the spotlight for the iPhoto library, I have tried rebooting my iPhoto Library, I tried the Time Machine (but I have never used it before, & that did nothing for me). I have tried probably every possibility you could think of.

When I click onto iPhoto, it is completely new as if I have never used it before - with NO pictures ANYWHERE. I have looked in my trash can, searched in every document, they have vanished off of my computer! Those pictures were not backed up anywhere else (stupid me, I know) and I'm just desperate for answers on how to get them back? Please help! Thank you! contact me:

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