What are the precautions that need to be taken if one has unstable angina and also have high blood pressure and high blood sugar levels?

Treatment needed: Your question is vague. Someone with the problems you describe needs treatment with a low fat, low starch diet, medications to control the blood pressure, blood sugar. If you are describing yourself (age 35) you need to see a cardiologist or doctor who can verify unstable angina. You would need a cardiac cath to see if you need a stent placed.