Chriscrayola

Hi Really hoping someone can help me. My laptops hard drive was full so I started cutting and pasting photos from my computer to a external memory stick, the folders of the photos appear on the memory stick but no photos are in there and I can't find them on the computer, any ideas why this has happened and where they would be? When I look in the properties of the memory stick it shows 20GB is taken up but it just isn't showing the photos please help?!