Noise from side of head when lying down
Last night when drifting into sleep I became aware of a noise in the left side of my head. It resembled a rapid tapping or perhaps a constant stream of tiny air bubbles and only happened when I lay on the one side,disappearing as soon as I lifted or turned my head. I was worried about my heartbeat so got up to check with a home Blood Pressure Monitor which showed a normal pulse so I am wondering what it could be. Perhaps it may have been caused by wax in my ear or some fluid or pressure but if anyone can provide extra information I would be grateful.