The GERD pain tends to show up in the outer ears, at the same time I start getting upper-throat acidic pain.
The TMD pain
is in
the inner ear, head, jaw, face, neck, and can radiate
as low
as the chest at times. You may wan to try something like Zantac (an H2 blocker) or Prilosec OTC (a Proton Pump Inhibitor) to see whether that helps symptoms. Of course, consult with your doc about this.
FYI, my first symptoms of GERD were about the same as yours.