Don’t worry! To format your write protected USB drive is not a difficult task:
1. Remove the write protection: http://www.tomshardware.com/forum/272402-32-flash-drive
2. Copy off all your important data from this drive.
You are supposed to back up all your important data on this drive before you format it. If you cannot access these data somehow and cannot back up them, neither, you could try a USB drive recovery freeware
that has ever restored all my data back form a mistakenly formatted drive. It is worth a shot: http://not-formatted.blogspot.com/2013/02/recover-data-from-not-formatted.html
3. Format hid drive:
My computer=> right click your drive => Format => Quick Format
Or you could use a format tool: http://files.extremeoverclocking.com/file.php?f=197