Hi Set Hu, Welcome to HealthcareMagic Forum.
You need to do some stretching exercises for your shoulder. Use your affected shoulder and upper limb in as many daily life activities as possible within the limits of your pain Apply heat or cold
packs to your shoulder regularly and it is known to help relieve pain. Just follow the Exercise Guidelines which your Physiotherapist has taught, Stick to your Treatment plan and go for regular follow up. The stretching Exercises include Anterior Shoulder and Posterior Shoulder Stretch Exercises. In anterior one, you Stand upright with the back straight, then Clasp both your hands behind your back and Slowly lift them away from the back and up, Hold them in this Position for 10 to 30 seconds, do 10 to 15 sets of this Exercise. In Posterior one, You Stand upright and cross one arm across your body from the front.Now Use the opposite arm, pull the elbow of the arm being stretched towards your opposite shoulder, Hold it in this Position for 10 to 30 seconds, do 10 to 15 sets of this Exercise. If these exercises are no helping, you should see your Orthopedist.
Wish you Good Health, Take Care.