It definitely hurts. I have had open heart surgery, several angioplasties over the last 15 years or so. I now suffer from from frequent angina attacks which feel like the beginning of a heart attack. I must carry Nitroglycerin at all times.
At this point there is nothing they can do for me except medication. My heat is good its not getting enough blood to the left side. Fact of life for me at this point. I have also suffered several strokes the first one being a complication from the open heart surgery 15 years ago. I am one of the fortunate stroke survivers as the strokes have balance and my fine motor skills. I'm able to speak, and walk although assisted, and I am thankful for that.
Please pay attention to your health when you are younger. Also check into family history. Arterial disease runs in my family, dad, grandfather past away early do to this and brothers have had heart issues at a young age.
