Am I hearing things (you don't) ????


About 5 years ago I started to notice a ringing in my ears. This is not a debilitating condition and I have learned
to tune it out. More disturbing however is an inability to tolerate high frequency "Noise". An example would be
the sound of plates clanging against each other as you remove them from the dishwasher. This type of sound
feels somewhat painful. At the RMAF last month after day one I found I could no longer listen to anything and enjoy it
as my ears felt fatigued. ( stayed too long at Raidho). I had a pair of ear plugs but failed to employ them at all times. Normally I listen at an average of 70 db. per my free phone app readings. 
I seem to notice during quiet moments a very low frequency off and on rumble sound. I thought it might be a piece of equipment in the home so I shut everything down, walked outside around all sides of the home thinking it might be emanating from a neighbor. No go. Its in my head. 
At age 60+ I have probably been subjected to my share of excessive noise but have never been an artillery man or Navy Gunner for example. 

Anyone else have similar experiences?
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Actually I had a hearing test a couple of years ago and was told my hearing is good for my age.  Only the highest frequency they test for was beyond my ability to hear.
At times I have a touch of this and it seems to center around the 5kHz band. What I've found works for me is to lisen to music at very low levels, below the threshold where I hear the "resonances." After relaxing into the music, the resonance seems to diminish to where I no longer perceive it. This is not something I came up with; several well known rock musicians have revealed this practice in interviews (Pete Townshend is one). I think they were encouraged to use this method by audiologists/ENTs. Also, I limit my caffeine and sodium intake before listening. Both seem to exacerbate the problem if I'm not careful.
One more thing: when I drive the interstate for over a half hour, continuously, I wear hearing protection (re-expandable foam inserts, 30 dB attenuators). I find that road noise is another aggravating source.