By definition, it is low blood pressure but can be normal if you don't have signs like dizziness or fainting.
Is 109/68 Low Blood Pressure?
Yes it appears to be low bp the normal bp should be 120/80
Like the previous people have stated 120/80 is normal. But some people run either higher or lower. If your a guy thats kinda bigger you tend to have lower. That is not a big difference from the norm. Don't worry about it, its perfectly healthy.
I'm a 54 year old female and my blood pressure reading just now was 94 over 66