Sir, I Am Also Prabakar, I Am Having Sugar For

Sir, I am also Prabakar, I am having sugar for more than 13 years and it is control. I am a HR personnel and stress will be there in the work. I have taken ECG and the result is no symptoms. Then Diabetic doctor( MD, C.Diab) advised to undergo thread mill test and undergone today. The impression is " Test Mild Positive For Exercise Inducible Ischemia ST changes appeared in stage 4 and disappeared immediately on recovery stage. What is it mean and what is the next step i should do?