You have positive family history of Hypertension
and Ischaemic heart disease
. Hypertensive for last 3 years, on regular medicines you should keep blood pressure around 130/80 mm of hg. Your coronary arteries mild blockage , These are Risk factors like Hypertension,Diabetes,High cholesterol
,Overweight and Smoking and Stress.
Get dose and number of tablets adjusted so your BP is controlled.
So follow healthy life style, Reduction of salt in diet,avoid smoking,Check for diabetes and cholesterol level that is Lipid profile
.reduce weight if over weight.Regular walking exercise.
Take care all these factors you will be all right.