Because your back pain extends to your chest, it is critical to seek immediate medical evaluation to rule out any serious heart or lung conditions. Please go to an emergency room if you also experience shortness of breath, dizziness, or sweating. If a doctor has already ruled out emergencies and confirmed the cause is musculoskeletal (like poor posture), you can take over-the-counter anti-inflammatories such as Ibuprofen (Advil) or Naproxen (Aleve) to relieve pain and inflammation. Taking frequent breaks to stretch and applying a warm compress can also help. Do not start any medication until you have been evaluated by a physician.