Should you tooth still hurt after a filling?

Not sure, but from what I have been reading is that it can take up from 4-6 weeks after filling was done. I had one done 3 weeks ago, and it it still sensitive and hurts with hot/cold drink or hard food items. It is better though than what it was 2 weeks ago. So mine seems to get better as the weeks past by. They say if it continues to hurt you need a root canal. Good luck