Could you tell me what are early signs of diabetes?

Maybe none : The classic symptoms of uncontrolled diabetes are excessive urination, thirst and hunger with unexplained weight loss but that is not the time to diagnose diabetes. It is best to diagnose in its early stages before symptoms develop or in the prediabetes stage. People at high risk for diabetes (overweight, family history, inactivity, high bp, etc) need to be screened and diagnosed early.