Yesterday had blood pressure taken at 4pm was 145/120, this morning taken again at my job was 145/90, went to my dr today she took it 3 times and it was 118/68...move never had had blood pressure , average wgt and exercise 2x a week, the two high bld pressures taken with an Electronic machine, ones taken by my dr were with arm band and stethoscope , what should I believe ?