hi.i think postural correction will help you in this case.but ill advice you to do some scapular exercise also.like bracing and scapular elevation depression.also use hot pack over that area before exercise.do trapezius steching and rhombodius streching,just sit on a chair and hold the chair from hand laterally and flex your neck opposite.maintain this pose for 20 sec then realax.perform this 7-8 times in twice a day/