I've been waking up with upper back pain mostly between left shoulder blade and spine. hurts when i breath and can feel it in my left lung/ chest.?

See your doctor: It could be any number of things, some of which possibly are dangerous. Dee your doctor as soon as possible.

Thoracic Spine: Thoracic spine areas will allow nerves to exit out of the spine and wrap around into the chest wall and abdomen. So herniated discs there can cause pain into these areas as well. I would consider seeing a pain specialist for treatment options like epidural steroid injection or even facet joint treatments.