Gentle Shoulder Stretching. Core Strengthening Exercises. Gentle Neck Exercises. Avoid sleeping on affected side. Warm up and cool down is a must. Contrast bath---It is a form of treatment shoulder is applied warm water followed by the immediate application of the shoulder with ice water. This procedure is repeated several times, alternating hot and cold. Note that the treatment should always end in the ice water, as heat will induce the body's inflammatory response, while cold helps to decrease inflammation.

Dear Sir, This is not normal. You need some investigations to rule out a fracture. A detailed clinical examination by an Orthopaedic Shoulder specialist is recommended

Please seek an orthopaedic or a Physiotherapist Till then keep applying ice to the painful or swollen parts

Needs to be assessed plz donot neglect if it is more than 24 hrs it could be difficult to manage as well if issue is severe as tear and if undetermined may result into serious consiquence.

Plz have proper examination by a physiotherapist, he will diagnose and heal it pain