Yeah! I also think you drive may be gone.
Have you saved all your deleted pictures on the phone memory or on the inner memory card?
Nowadays, many phones have their own memory card that could help hold great amount of data.
If you've saved these pictures on the inner memory card, you do have chances to restore them back at the help of data recovery software.
Try to use a phone memory card data recovery freeware here:
http/www.freeware-fix.blogspot.com/2013/03/memory-card-recovery.html
But, if you've saved them only on the phone memory, I am sorry, your pictures are all gone.
Therefore, next time, you should never forget to save everything important on the inner memory card and back up it well on another storage device.