This could be a result of awkward sitting habit at your workplace or there may be strain due to twisting, improperly lifting some objects or over stressing a muscle beyond the limited ROM
Next Steps
Apply Hot pack for 10-15 minutes twice a day.
Apply volini or any pain relief gel.
Massage that area in cicular and rollong motion.
Mild self stretching of chest muscles.
Strengthening exercises of core, back, shoulder and pectorals.
Maintaining a good body posture.
Protein and vitamins rich diet.
Multivitamin supplements.
Health Tips
Avoid over stretching.
Say good bye to slouchy posture.
Consult a good physiotherapist or you can cosult me for further.