Hello,
To reduce tightness in the upper collar bone you are suggested to get physically examined by a GP (orthopedics). Your joints will be assessed for range of motion and stability. Your treating doctor may recommend you to get Imaging tests (MRI and CT) done to detect the factor causing you pain and hurt. You will be treated accordingly. Since you are having pain, tightness and
shortness of breath you should get clinically assessed at the earliest as symptoms of troubled breathing, dizziness, chest tightness,
excessive sweating may be indicative of heart attack.
Collar bone pain can be a sign of heart disease (pericarditis),
gall bladder disease, liver disease, nerve pain (neuropathy),
clavicle fracture, muscle strain, etc. For heartburn and to ease pain you can take antacid, PPIs, one SOS when required. Sometimes, MI is confused with heart burn. Get all cardiac function tests done. Get treated at the earliest.
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Nupur K., General & Family Physician