Diabetes Go

diagnosis of diabetes?

Hello,

I have a question about the diagnosis of diabetes. when I went for thyroid level check, my family doctor told I have diabetes becuase my sugar level is 128.The next day, I have started diabetic diet
and was doing lot of exercise. when I went for next visit after 3 months, my family doctor was not there and the replacemet doctor went through my file and asked me to have glucose tolerance test to
confirm diabetes.

now, I am confused whether I have diabetes or pre-diabetes or now it will show controlled diabetic number due to my exercise and food which will be misleading. any help in this regard
is appreciated.

Thanks
bob