You should schedule an appointment to discuss the matter with a doctor to rule out the possibilities of a coronary vessel occlusion. Usually, CAD begins with chest pain, etc. with exertion and there is relief with rest (stable angina). You have symptoms of unstable angina (pain at rest and/or exertion) that can be related to a heart condition. Chest pain can be to other heart problems other than CAD. Anytime the heart is not getting sufficent supply of oxygen there can be the symptoms you describe.
For instance the failure of oxygen to gain access to, or to be utilized by, the body. Oxygen deprivation may result from interference with some stage of the inspiration, lung diffusion, blood transport, cellular absorption, and final utilization by enzyme systems
Thanks for you question, and if you have any followup questions, you are welcome to respond.