Young and high bp

Hi, i went in the doctor today for a check up. My bp was 154/117 and i felt fine but have a slight headache... I am 20yrs old. I weigh in around 118 lbs. I eat healthy ( most of the time) but i havent workout out in a month or 2. I have an appointment in 4 days. I know this wasnt normal since it raised concerns for my Doctor. My doctor also know that in my family history there is heart disease. Has anyone else have something similar happen to them? Did you change anything in your normal routine? Any advice would be greatly appreciated.