Dear Welshexport - as a Welshman I will due my duty and help u out. You said 'Then in 1993 we moved to a new area and the problems I was having were not getting any better I was getting more and more neck pain shoulder pain and pain between my shoulder blades. But my stomach was always very acidy so my house doctor sent me to an internist who gave me my first examination with an endoscope and found that I had a small hiatus hernia this was in 1994. This was the first time that I was put on omeprazol 40mg and have been taking this medication since then. The past couple of years my back pain has got a lot worse underneath my shoulder blades my neck my left shoulder sometimes my arm goes numb and now my left breast aches like hell and I now have a lot of pain in my left arm pit. I am in continuous pain right between my shoulder blades'
I think you have a cervical vertebrae problem - the usual discs are C5 or C6 or C7. As the discs wear out as we get older they become thiner. As they become thinner they start to iritate the nerves leaving the foramen (which is part of the vertebrae) This nerve root iritation then manefests itself as pain between the shoulder blade The other thing that can happen is this. Because the nerve root is irritated, it also affects the autonomic system (vagal nerve). The nerve roots coming out of each cervical vertebrae (at the foramen) are both sensory and autonomic (vagal) - so the area that is affected is your stomach. I would not be surprised if you were also missing a few hear beats as well. (atrial fib) So to summerise. Nerve root irritation in the neck causes pain in the shoulder blades and increased acid secretion in the stomach. My advice - get an MRI of your neck. All the best (PS - chest pain and deltoid pain - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2881998/)