Hi Thank you for asking HCM. I have gone through your query. As you having chest pain and numbness on left arm better to have an ECG to rule out problems with heart (cardiac ischemia). Blood pressure and lipid profile should be checked also. If those are high then should be managed initially by life style modification and if not getting controlled then by drugs. The other problem which give such symptom is cervical spondylosis. In such case correcting your posture while sleeping and sitting will be helpful. Avoid high pillows while sleeping. Hope this may help you. Let me know if anything not clear. Thanks.