What Causes Severe Pain In The Right Shoulder?

i HAVE SEVERE PAIN IN RIGHT SHOULDER THEN THE BLOOD FEELS LIKE IT DOES NOT FLOW TO MY BRAIN AND A TERRIBLE HEADACHE STARTS WHICH TAKES HOURS TO GO AWAY.WENT FOR X RAY AND IT STATES EARLY OSTEOPHYTE LIPPING OF THE UPPER ANTERIOR LIP OF C6, NS SUGGESTS EARLY DEGENERATIVE CHANGE AT THE C5/C6 LEVEL. i HAVE TRIED ANTI INFLAMMATORYS AND PHYSIO THERAPY IT DIES NOT LAST LONG AND THE PAIN IS BACK> WHAT DO YOU UGGEST I DO?