I agree that you should know your blood pressure, but you shouldn't necessarily get too worried when your numbers don't fall into the normal range. My blood pressure has always been just higher than the normal ranges, and it has gone up a little more as I have gotten older.
When I was younger, one doctor put me on blood pressure medicine. Like I said, my pressure wasn't really that high, and I didn't like the side effects of the pills he prescribed for me. I eventually went to another doctor, and after several months of monitoring my blood pressure and my overall health he told me I didn't have to take the pills.
I take my readings a couple times a day and they never get into the danger range. They are still a little higher than what is considered normal, but I am fine.