If you have a toothache that persists more than a couple days, see a dentist ASAP.
I put it off a couple weeks, and today I found out the infection from my canine tooth had spread almost beyond my nose and eye, which can be potentially life-threatening.
So I got a root canal this afternoon.
I wouldn't wish this on my worst enemy.
Take care of your teeth! Brush em! Floss em! Get checked up twice a year! If something feels weird, take action sooner rather than later!