Thank you for your query at DoctorSpring.com
Do you have these symptoms on exertion or at rest? You could get an angiography done to see if all the grafts are normal and the stents are normal.
After undergoing the stress of multiple angioplsties and bypass people tend to develop a fear of having recurrent heart disease and may start imagining things.
However we can confirm it as psychological only after an angiography turns normal.
Dr Vivek Mahajan