Left Ear Morse Code Sound

For about 5 years now I've had a morse code type of sound in my left ear it's fairly loud especially at night when trying to sleep.

The thing is I can make it stop when I move my jaw but as soon as I relax my jaw the beeping starts straight away.

(if you were to balance a pen between your top lip and your nose that's the movement I do to stop the noise)

I get the normal high pitched tinnitus also but that is bearable but the morse code type drives me crazy.