Are you resting before taking the measurement? You should be lying down for five to ten minutes prior to taking a reading.
I know from experience that mine is 110/80 (which at the age of 47 and moderately overweight ain't bad). My regular airmedico has seen this enough times over the years to know what's normal so on the occasions where I've been in a bit of a rush and it's a little higher he knows he doesn't need to wait ten minutes.
"Any changes since last year?"
"No"
"Can you read this chart?"
"Yes"
"Great. See you next year" Kerrchinnnggg!!