All my photos are deleted from my iphone

All my photos deleted from my phone also there's no photos in the photostream. I tried everything. I plugged it into my Mac and its not there in iTunes, nothing. I plugged it into my PC and it says the folder with all my stuff is full but when I open the folder it's empty. Also in the usage on my phone it says that I have 4.5 GB used of photos but there's no photos on my phone! URG Help

I've heard of recovery sticks you can buy. But have you tried rebooting?

Hold Power and Home at the same time, till you can power it off. Slide to off. Hold Power till it turns back on… It will take a bit to boot up. You won't lose anything doing that.