fasting blood sugar alone misses 30 % of diabetics . better do a 2 hr post prandial sugar for many months or years many have post prandial hyperglycemia
before they become overt diabetic . if in doubt do HBA1c
. more than 125 fasting means you have Dm . between 100 to 126 y r a prediabetic .
post prandial if less than 140 u r not a diabetic and if more than 140 and less than 200 mg u r a prediabetic and anytime if more than 200 mg u r diabetic . so dont confuse urself . check ur ppbs
good luck. keep in touch\