My iPhone suddenly doesn't have any pictures on it! What happened?

My iPhone suddenly doesn't have any pictures on it! What happened?

Added (1). Forgot to add details…

Just the other day I hooked it up to my computer - and all the pictures were there. Unfortunately I was tired and dropped it this morning, and the screen is too cracked now to use the bottom part of it - and therefore I can't type my password since it has numbers in it. I was going to do a phone restore - so I plugged in my phone to backup my pictures…

But suddenly there are no pictures! What in the world happened? How did dropping my phone effect my pictures?

Well obviously if you damaged any storage then that area is gone. You shouldn't have to ask that, its common sense.