You can use activated charcoal compress or clove oil compress. You can get activated charcoal at many drug stores as well as natural health food stores. Simply mix two teaspoons of activated charcoal powder with enough water to make a paste and then apply to a piece of gauze. Now place the gauze on the tooth. Visit http://altmedicine.about.com/od/healthconditionsqtoz/a/tootheache.htm for more details.
Well...you could go to the health food store and buy clove oil, unless you already have it. Rub it on your gum or the tooth that is sensitive or hurts. A little heads up: Clove oil doesnt taste so good:) But if you want to try something else just eat something cold and soft, like icecream:)