Ahhh, yes - the ol' "plugged ears" thing!
I too have had plugged ears since March of this year. I have done TONS of research on everything from TMJD, to inner ear disorders, to hormones, etc... and the best explanation I have figured thus far is that my eustation tubes are getting "squished". How, you ask? Yes, I am in perimenopause - my hormone levels are quite low and I have felt basically like crap for the past 8 months (estradiol = 21F). So because of my low hormone levels, this is causing migraines which can "swell" the areas in the head (eustation tubes, etc.). Also, I find I have been clenching my teeth horribly because of how crummy I feel, which can also cause the closed tubes. And of course this all causes major headaches too which I have almost daily.
So what is the answer? There are a few actually. Either we can try to raise those hormone levels so we feel better (HRT, bioidentical HRT), we can take migraine medication to lessen the swelling in our heads, or we can wait it out and let our bodies adjust naturally. I don't like answer #3 very well because I am already so tired of feeling so horrible and it's only been 8 months. I can't imagine feeling like this for years before I hit menopause. I don't like the side effects of migraine medication either, so that one is not desireable either. So that leaves me with some kind of help in the estradiol arena! I need to raise my 21F to a much higher level to be able to function properly - at least to 80F.
Hope that info has helped you.