Yes, get it checked immediately. Actually try to see a dentist in the area, who has the VELscope. Dentists are the one who are trained to identify any changes in the oral mucosa and VELscope allows them to see what they can't see with the naked eye.

Like everyone has already mentioned, Let this be a wake up call for you and quit chewing tobacco.

Good Luck. Hopefully you write back with a good news of this being nothing of concern.