hi,
you have a slim chance of recovering your db since you don't have a backup.

Try to backup it up now b4 anything else, in case you commit mistake during recovery you got something to draw back.

Move one of the controlfile out, then try to copy one of the control file to the other and restart your db with mount option. If it does not work, copy the controlfile you have moved out to the 2 controlfiles. And restart the db again with mount option.

Notice the naming convention like control01, control02…