I have been struggling with pain in my clavicle region. It radiates up my neck/throat area, down my chest, out into my shoulder and is moving toward the back of my neck. This evening I discovered that the source of the pain seems to be at the very tip of my left clavicle in the suprasternal notch. Any ideas on what could be causing this? Could it be from just an awkward sleep position? I woke up with this about 4 days ago.