Left ear woke me friday morning with loud ringing. now it feels full but no ring, hurts every so often don't have wax or loud events. what is cause?

Doctor can check it: I ear that feels full, and doesn't go back to normal in a day, should be checked by a primary care doctor. The same goes for an ear that has off and on pain. The primary care doctor may refer to an ENT specialist if needed. There may be ear fluid behind the eardrum or a middle ear infection. In a few cases, doctors find an insect in the ear.