HI...what you have is known as "white coat syndrome". you BP rises when you see the dr. or go to a hospital. Many folks have this, myself included. If your BP is normal at home when taken between meals, not after exercise and when you are not under stress, then you DO NOT need BP lowering drugs. When you visit you dr. have him take your BP a second time at the end of your visit while you visualize a pleasant scene. You will be amazed at the change that can cause in your BP.
Good luck, Nicole