iphoto and all my photos are missing
I went to do something with my photos and noticed iPhoto is missing and has been replaced by Photos. I searched for iPhoto in my applications and it says "In order to open iPhoto, you need to update to the latest version. When I go to the app store, it says a retail version is not available.
So my question is, what happened to all my photos?! The new Photos only has a few days worth. I checked my iCloud account and the same thing. I had years of photos in iPhoto and can't find them.
From what I can tell, there was some way to do a conversion of iPhoto to Photos, however, I don't recall ever seeing anything when I upgraded my IOS version (Yosemite 10.10.3).
Help please!
iMac, OS X Yosemite (10.10.3)