Like I said, a fasting glucose level can miss a lot (particularly, how your body responds to carbohydrates, which you ingest all day). Given how close it is to the pre-diabetic range (my endocrinologist actually wants to see fasting glucose levels under 90) and given your high post-meal reading on the glucometer, I would defintely request a 3-hour glucose tolerance test and, if it's normal, just check again after a year has passed.

Cut-off levels are a little bit arbitrary. It's really more of a continuum than "if you're under this number you're completely normal or if you're over it, you've got a problem."