Well take all the expert advice you get and implement it. Hopefully your stent will help , please god. When it settles down, you will get the exercise/ brisk walk talk from your doctor. Its important to keep up the walking 5 or 6 times a week, 30 mins approx (As advised by your doc of course)
There are lots of people here on Med Help keen to offer help and advice, most often speaking from personal experience.