Need details. Other symptoms?It can be a lot of things, but usually not very serious. Please consult.

You are suffering from Tinnitus. Tinnitus is ringing or buzzing noise in one or both ears that may be constant or come and go, often associated with hearing loss. Tinnitus is usually caused by an underlying condition, such as age-related hearing loss, an ear injury or a problem with the circulatory system. For many people, tinnitus improves with treatment of the underlying cause or with other treatments that reduce or mask the noise, making tinnitus less noticeable.