Hi,I am love k sareen,a sports physiotherapist.your condition seems to be a case ofrotator cuff tendenitis, in which any movement with shoulder in internal rotation causes increase in pain,pain usually increases during mid night & radiates to front of arm,sleeping over the affected shoulder gives u relief initially with subsequently increase in pain.you must ask your therapist to give T.E.N.S, I.F.T and ultrasonic therapy with depomedrol. usually it will take more than a month to see a significant reduction in pain, once tenderness at shoulder decreases u can start with the rotator cuff and scapular exercises.