I Have Severe Pain In Legs, Knees,ankles, Feet, Very Fatigued,

i have severe pain in legs, knees,ankles, feet, very fatigued, difficulty breathing, tightness in chest.
I have COPD, triple heart bypass, diaphram paralyzed left lung, diabetes
test performed on heart, lungs, kidneys with negative results, some blockage in artery apical lateral