My 17 m old boy becomes thirsty more than before and the diapers become full faster, he also wakes at night hungry and not very well, i'm scared of dm?

Watchful concern: I can understand your fear. but I wouldn't worry too much. Is he losing weight? What is he eating and drinking during the day? Typically with diabetes, there is excessive hunger and thirst througout the day and the "little ones" like your son, will lose weight. If he's drinking a lot of liquid then he's going to urinate. If you are unsure, discuss your concerns with your doctor; have him examined.