Is 133/67 good bp? is the diastolic low?

Probably: I would like to see your blood pressure below 120 systolic at your age. If this measurement is the same on more than 2 occasions, you should consider measuring your own BP at home periodically since you are at risk of developing high blood pressure as you get older. Do note that blood pressure measured at the doctor's office tend to be higher , a condition known as "white coat hypertension.".