Don’t know what happened to my photos

Today I was in one of my folders deleting blurry photos and too many duplicates so I could burn them to a CD and after I did that I went back into that folder and some of my pictures are just gone, I get only the flower icon in place of the photo and when I click on that icon it says "Photo Gallery can't display this photo because it is an empty file", I tried restarting my computer but nothing seems to be working to try and figure out where those photos went.  Any information, any help would so greatly be appreciated.  They were pictures of my first Granddaughters Baptism, I just don't understand what happened some are there and some are gone.  Please someone help.  Also, I did not accidentally delete them because the icon is still there (the one of the flower) where the picture should be.