No, in all probability you are not suffering from
Diabetes mellitus.
Do you have a family history of diabetes ?
If yes, then you may do a fasting and 2hr post lunch or 75gm glucose in 300ml water and let me know the report.
In any case do not let your total calories ingestion much more than what you spend daily. Avoid junk food and packaged soft drinks etc.
Do regular exercise.
Next Steps
Just follow my advice. Other tests like
HbA1c is not required now.
Health Tips
Daily exercise.