Go see your doctor and get tested,
at least get the HgbA1c test. A
fasting test only measures that moment
at the time of the test not over period of days. The A1c goes back three months. The latter will determine whether you are a diabetic and/or a candidate.
This site will show you a range of 'normal' glucose ranges and as you will see they drift all over the place from a low of 70 up to 160 depending on when you test.
http://tinyurl.