I have lost my photos on a galaxy gt18160 ace 2

I put an sd card into my phone, and transferred my pictures to it. The pictures that I have taken since, I can't find. When I check my files, all it shows SD - not what is actually on my phone. Now I'm taking pictures, but can't find them. They don't seem to be anywhere!! Help

via Cell Phone Forums (French) http://cellphoneforums.net/fr/samsung-galaxy/t363562-i-have-lost-my-photos-on-a-galaxy-gt18160-ace-2.html