For Years Now I Have Suffered Upon Waking With Pain

For years now I have suffered upon waking with pain in between my shoulder blades,this disappears within half an hour of waking or it turns into a migraine. If I sleep on a very hard mattress this pain wakes me and pulsates with a numb feeling. I also feel shaky during this pain. I have had an x ray which showed nothing was wrong,I have worked hard physically all my life so this pain also appears with in half an hour of strenuous activity.I have had weekly massage,weekly physio and chiropractic visits to find a solution to no avail. I am female and 49 years old.I now have the softest mattress but still suffer every morning,hoping for an answer/cure Tracey.