Drive [Q] Help in restoring whatsapp Database folder

I have recently switched to a new Custom ROM and in the process of doing it have lost the whatsapp DB folder and hence i cannot restore my old messages from whatsapp. Unfortunately i did not make a backup of the folders, have tried few of the data recovery folders but they were only able to restore images and docs but not the db file.

Could someone let me know if there is anyway we could recover the Whatsapp DB folder after it has been deleted.

Currently using

ROM: cyanogenMod 10.1