My tooth is hurting. what should i do?

Hurting tooth: A hurting tooth likely means infection or significant tooth decay and cavities. Best to see your dentist for an evaluation.

Possibilities: Could be a primary tooth problem (cavity, infection, loose filling). Could be a sinus infection. Would start with a dental check up and if that does not find the cause, followup with your doctor to check your sinuses.

Many causes: You may have a fractured tooth, a cavity, defective filling, infected tooth, gum disease, excess clenching/grinding of your teeth etc. Please have your dentist evaluate the tooth and the rest of your teeth/mouth.

Maybe a sign: Pain usually means you have issues that needs attention and should not be ignored. Please find a dentist to help you, the pain will likely get worse till you do.

Seek a dentist...: While some patients may attempt home remedies, these may not help over the long run. When a tooth hurts there may be a problem that only a dentist can treat with certainty. It is best to see the advice from a reputable dentist. If you do not have a dentist you may search online for nice patient reviews.

More info needed...: Unless examined, it is impossible to tell over the internet why your tooth is hurting you. Best bet is to see a local dentist.

See dentist: A few possibilities including commonly decay, gum disease, cracked tooth, grinding of teeth. See dentist for evaluation.