Computer Help and Support

if from your phone or digital camera, perhaps you have them on the phone or SIM card or the camera flash card (I've taken to never deleting photos on my phone or camera... I buy new cards for the camera and I usually replace my phone with a bigger phone before I run out of room).

If from the internet, likely you can retrieve them again.

If you posted them to facebook or picasa or someplace, you should be able to retrieve them again.

Last, did you share photos with family or friends?... chances are those can be replaced as well.