Hello,
Some sensitivity is normal after a few days after cleaning.
Persistent sensitivity is a cause for concern and should be addressed immediately.
In your case, persistent sensitivity could be because of the outer layer of your teeth wearing off.
Next Steps
Has the sensitivity increased or decreased in these 2 months?
If it is increasing, visit a dentist immediately
If it is decreasing, it may subside after a while. Though the teeth wear needs to be addressed sooner than later.
Health Tips
Avoid very hot and cold foods/drinks
Apply sensitivity gel to the affected teeth