Its 109/48 and my heart rate is 65. This is the average of 6 tests over two days. I m 15 and 6 1, 150 pounds. I m mainly wondering if my diastolic is too low when taking into consideration my systolic and heart rate. I took it myself using a machine and at 3 different times each day for two days. I already know it can fluctuate over several minutes and that is why i made an average.