Iv had consistently high blood pressure for a year even with exercise and good diet. At what point do I start worrying. My doc still hasn't addressed it?

Depends. At your age, very early for what we call essential hypertension. Hope your doctor did work up (blood work, urine test and EKG) to look for correctable causes of high blood pressure (less than 5% of folks). If all negative, I will go 6 mo with diet and exercise changes. If stil up, time to start medication.