Your blood pressure looks perfect.
It may have been up when you were at the doctor's office because you were nervous, or a little anxious. This is a common occurrence.
Whatever other health problems you may have, you do not have a problem with your blood pressure or your heart rate.
You might want to ask your doctor what "too low" would be. You might also want to keep a log of your blood pressure if you take it at home, so you can show your doctor what your blood pressure normally runs. At this point, I wouldn't worry much about your blood pressure unless it falls below 90/50 consistently.