You appear to have mild hypertension. However this must be confirmed by several readings say once in 2 weeks.
You must first try simple methods of BP control after a full check up which should include full biochemical tests, ECG, X-ray chest.
These measures are
Diet should be low in salt & fat. Your weight is O.K.
Regular exercise - walk an hour daily
No alcohol or smoking
If your BP is still above 140/90 mmHg you can start drugs. I suggest you get the advice of your doctor for this.