I've had really high blood pressure and actually had a "mini-stroke" in the past.  Don't *ever* just quit taking blood pressure medicine.  When they take you off it, they step you down so that your pressure doesn't spike.
I take baby aspirin every day to try and prevent strokes and so forth.  I am also on a mild blood pressure medicine and a "water" pill which gets rid of all the excess water that I tend to retain because of the blood pressure.  Mine is caused by a combination of Thyroid and Kidney disease (one is a cause of the other).
Get it checked out.  Blood pressure is nothing to mess with.
I hope it all works out OK for you.  You're doctor will give you advice on what to eat, how to exercise, etc.