When should a person go to the ER for high blood pressure. I've been having a pounding head ache, face has been flushed, etc for over three days. I used to have to take high blood pressure medicine but I was running, loosing weight and my need for the medication was done. I've recently gained weight and haven't run in about 3 months. My blood pressure is 150 over 95. When do I just wait to go see my regular doctor and when do I go to the ER?