If you are going to go for walks, try this first. Put some foam ear plugs in and go for a short walk. At first, you will notice the pounding of your foot plant. Try to soften you gait to reduce the pounding. Once you have mastered a softer walking style. Go take some walks.

You might need to find some good walking shoes. Test them out at the shoe store with the foam ear plugs. Heal cushioning will greatly help you ability to walk without the pounding. Those Sketchers with the rounded heals may be a good try.