Nintendo DSi Camera Problem?

OK, so today i was taking some pictures on my Nintendo DSi, and a lot of them. i was going to upload them to Facebook so i went to the album. but when i got there they weren't in it. i checked to see if somehow they were in the SD card album thing. they weren't. i tried turning off and turning it back on. that didn't work. on the calendar it says that i took them but they just aren't in the album. does anyone know how i can fix this????