You should book an appointment with your GP. It's not in blue light territory, but wants lowering.
Record blood pressure periodically at home until then, and take the record with you, together with your blood pressure monitor, so you can take a reading in the surgery and compare with the GP's blood pressure monitor (which is likely to be better calibrated).
The difference between your systolic and diastolic is very low. Are you extremely fit with aerobic exercise?