Cracking your neck is not a good idea. It can cause inflammation. Neck inflammation is a common cause of other nervous system problems. But, the neck pain suggest you do have a neck issue worth investigating. Healing a subtle neck injury is difficult, takes time and discipline.

It may be impossible to diagnose such a subtle neck injury but still be worthwhile treating your neck as if it is injured without knowing what the specific injury is. Gentle traction and vertebra mobilization can be helpful with discipline to not undo the treatment by self-cracking and other strains to your neck.