Yesterday, while walking in a store, I had blurred vision, nausea, headache and had to sit down for awhile until it passed. About a half hour. I was in walmart and the pharmacy had a blood pressure machine which I used 3 times resting during the half hour. The numbers were low each time between 80 and 85 over 50 to 55. Normally, my blood pressure has been 120/80 or 110/70. Four years ago, I had triple bipass surgury and just havent had alot of energy since.