It looks like your physician has appropiately started you on medication. It is reasonable to have those medications adjusted after a period of time. That is a great discussion you can have with your primary care physician. You can keep a log of your blood pressure over different times of the day to help your physician in choosing an apppropiate adjustment in your medication.
Also keep in mind that in addition to taking medication, changes in diet and exercise can also help you maintain a better blood pressure.