About 2 weeks ago my blood pressure was on the high side and i have a history of high blood pressure. It went back down to normal and i see the doctor every 3-4 days. Last i saw the doctor was 2 days ago and my blood pressure was good, he said to watch out for headaches, but he didnt say what to do when i get one. The last time i had a headache was like 5 months ago. and I woke up this morning with a headache and now (6 hours later) i still have one. What should i do? Can my blood pressure go up that much in just 2 days?