So for as long as I can remember now I've had this weird tingling pain in my left shoulder blade but after a few weeks it would usually go away. Well lately it's been really intense and the pains spreading across my whole upper back and neck. I'm having really bad indigestion and when I burp it hurts back there? Also it's a lot worse when I sit at work for a long period of time I have horrible posture as well. Can anybody help me with this thanks.