Camera roll is empty, but ...

My camera roll is empty, but when I go to "General" > "About" it says I have 479 photos. I have the iPhone 6 and just updated to iOS 8.1.3, but I think this problem occurred before that.

I do have one other album on there, but there are only 102 photos on that - forgot to mention.

So I'm very confused as to where these extra non-existent photos are coming from. It should say that I only have 102 photo's shouldn't it? Where did these other 377 photos come from?

I cleared all my whatsapp conversations as well and that did nothing.