What is low?
What would you define as low?
For example, if your morning reading is 80, and you feel great, than thats fine.
If it's 80 and you feel clammy and terrible, then perhaps it is too low.
A lot of times, it has to do with the dosing of medications you take the day or night before.
Check your finger sticks regularly, have your doctor analyze them in reference to the meds you are on. Good luck!