Ears feeling full is a typical symptoms of hypothyroidism. My wild guess is that this may be linked to low temperature while asleep, which is also a symptom of hypo, and you may notice you feel cold when getting up. I do, and I get v cross with my husband who is not hypo and leaves the back door open in the mornings!
Your back: hmm, well I find my back seizes up very easily. My guess is that this is another hypo symptom. I bought on impulse one of those back massager seats about nine months ago, it has absolutely helped - they're about £100 or so but so worth the money for me, and I lie against it in the evening watching television and feeling the very tight muscles begin to relax. I wish I'd known about it years ago.
Do you think your neck and back are very very tight? Do you lie awake at night feeling terribly uncomfortable, do you feel ever that you want to hang upside down to get rid of the discomfort?
You don't by any chance have a job which involves being at a computer for hours on end, do you?