My tooth only hurts at night only!! I don't whats going on!?

My tooth never hurts during the day at all! This toothache only occurs when I go to bed and its not serve pain but its tolerable. This has recently started!! I haven't called my dentist yet because I am hoping it will go away but i just hope infection isn't trying to setup. It feels like cavity pain!... show more My tooth never hurts during the day at all! This toothache only occurs when I go to bed and its not serve pain but its tolerable.

This has recently started!! I haven't called my dentist yet because I am hoping it will go away but i just hope infection isn't trying to setup.

It feels like cavity pain! You know how bad that hurts!! It doesn't hurt when i brush or eat just when i lay down at night to sleep.
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