You may need to reset your breaker. Open your breaker box door and look for the breaker on which the switch lever has shifted away from the ON position. It likely will be the only one with a lever that is not pointing in the same direction as the other breakers.
Push the breaker lever fully to the OFF position then back to the ON position. You will feel resistance in the lever, followed by a distinct clicking sound or sensation as the breaker clicks to the ON position