Knocking on Eardrum

Last night, out of the blue, I heard three knocks in my left ear, like somebody was knocking on a door, then it stopped. It wasn't particularly loud, or even alarming, just very strange. I have been trying to drain my Eustachian tubes, and hear crackling sometimes, as well as feel movement of liquid, but this knocking was a new symptom entirely.

 

I have had that before too. Multiple times actually. It's your ear bones messing about. I think it's common with ETD.

 

Thank you, I didn't think that anybody else would have had this symptom, and it's good information that I'm not the only one.