i suffer the same thing, though i ve been diagnosed with hpylori in 11/05 & acid reflux but have had a negative Upper GI series", anxiety (which can affect the muscles around the throat, neck, head , shoulders, chest pain ( I have that too) ive stopped taking prevacid, and drink organic apple juice/cider, take 2 tsp. of organic apple cider vinegar before a meal, and if my stomach hurts which has caused chest pain, take a tbsp of lemon juice to check if you need acid or have too much...if the lemon juice takes the pain away you need more acid like grapefruit and such if not you have too much acid which is ok. As we speak my throat is hurting along the sides, difficult swallowing but i have been cletching my teeth at night and have TMJ after having my wisdom teeth pulled. Lately Ive been upset & angry, so these symptoms always manifest everytime. My opion these things are simple under our control, like just easing on the stress, take a walk, enjoy the sunlight, positive thinking. Ive tried every medication & ive given up on the medical aspect & medications that can be more harmful than good. Our ancestors never had this much promblems like we do, you know what i mean? I guess we have to take these pains as a red flag and how we're treating our bodies ourselves, and how much more rest we may be needing.
My suggestion would be to look into the concept that this maybe a issue of muscles since your mentioning pain in both jaw joints which indicates to me that your mandibular muscles are tight and compressing your jaw. If the closing muscles are tight, then the corresponding opening muscles are also tight and would probably involve the neck muscles also that refer tension and pain to the throat. The SCM muscles which are almost always involved when the jaw muscles are, or possibly even causing the jaw problem, will refer pain all the way from the back of your head, down the sides of the throat and into the sternum since this is their lower connection point. You may have something as simple as messed up head support muscles which are also impacting your jaw, or you could be grinding your teeth in your sleep causing jaw problems which are bringing your neck muscles, throat and sternum into it.
Try researching Temporal Mandibular Joint disorder, or TMJ syndrome. Your expressing an awful lot of the symptoms of your neck and jaw muscles being in spasm. Its probably the last diagnoses you would get from a primary care physician and the last thing they would think of as causing this many problems from one simple source that is fairly easy to treat once you know you have a problem there.