Reading your post you could be me, except you are much younger..
I'm sorry to hear your story because it sounds so much like mine, and many others on this board.
I'm no doctor, but it sounds like all the classic symptoms of LPR, or silent reflux.
I also have the plugged ears, that click when I yawn or swallow, I have the burping, burning, and have experienced the dizziness as well.
I also have great blood pressure (low in fact) and great blood work, but my insides are a volcano!
I can relate perfectly. Unfortunately I wish I had something better to tell you like it will all go away !!
Best to see a gastroenterologist or an ENT physician and get a diagnosis, maybe even a second opinion, and try some different therapies.
some of us have great luck with various medications, and others aren't doing so well with meds, but you have to try different things, and eat VERY carefully.
oh-I also have the heart palpitations, I think that's part of it too, so try not to panic, even though it's hard not to sometimes.
take care and hope you feel better soon.