Hi,
There can be various reasons for your
shortness of breath and pain shoulder blade.It can be due to cardiac (heart related) disorder. Since you have already got an ECG, X-RAY and blood tests done, which according to you are normal, we need to look for other causes.It can be due to low hemoglobin or vitamin deficiencies. Sometimes abnormal posture, muscle related or neck related problems (muscle spasm,
cervical spondylosis) can also cause such symptoms.
Acid re-flux, as you mentioned can also sometimes produce such symptoms. However usually they are associated with regurgitation.
Epigastric pain and nausea and are usually associated with intake of food. So I feel that take in plenty of water. Avoid fatty and spicy food. Take balanced diet. Take care of your posture especially while working and sleeping. Do some light neck exercises.
If still the symptoms persist then go for other investigations like
complete blood count, X-ray (neck), sugar levels and
Helicobacter test (bacteria in the stomach). This will help us to make the exact diagnosis and plan proper treatment.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Milinda Gupta, Internal Medicine Specialist