Sounds like a classic case of Hypertension (Fancy for High Blood Pressure). Here is more information, definitely get it checked out with the doctor. If exercise and diet treatments don't work they will usually jump to meds, depends on how severe they believe your case is. My mother has been a nurse for 15 years (Specializing in the elderly where high BP runs rampant) and her whole side of the family is nurses. I am also a pre-med student. It is usually easily treated but obviously can lead to many things to include aortic aneurysms. Hope you get it all taken care of!
http://www.nlm.nih.gov/medlineplus/ency/article/000468.htm