Left side chest ache after spontaneous exertion, heavy meals and emotional stress. Normal nst's in 2009 and 2013. Mvp found in echo. Ideas?

Stress? Mild mvp rarely if ever causes symptoms. Assuming you have had 2 normal stress tests, pain that comes after heavy meals sounds more like gerd than heart origin. You might try Omeprazole for a couple of weeks and see if the discomfort stops.
non-cardiac. You have non-cardiac chest pain. Possible alternative causes include myofascial syndrome, fibromyalgia, peptic ulcer disease, gastroesophageal disease and neurocirculatory asthenia. It can be hard to treat. Good luck.