Within the last few weeks, I've developed a severve pain
in my left shoulder blade
, which often extends into the back of my neck/head and into my left arm. The pain tends to be worse at night, especially when lying on my chest or back in bed. I've had a similar pain before, around a year ago, which extended from my stomach up to my right shoulder and hurt more when I breathed deep. I went to the emergency room and they did x-rays and told me I was constipated and this was causing the pain.