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YOur symptoms seems to be case of frozen shoulder
Actually The Ayurvedic treatment of frozen shoulder is aimed at treating stiffness
and pain and preserving the mobility of the shoulder joint. Medicines like Yograj-Guggulu, Triphala-Guggulu, Kaishor-Guggulu, Sinhanaad-Guggulu, Maha-Rasnadi-Guggulu and Punarnavadi-Guggulu are used to reduce the inflammation in the shoulder joint.
Application of herbal medicine then Application of heat to the shoulder joint is also quite helpful in reducing pain and stiffness.