I'm no doctor; this is not medical counsel nor insight;
That being said, I'm fairly certain acquiring diabetes at your age is extremely unlikely, and, as the previous member commented, would be much more obvious if it ever happened. Are you at risk? Does it run in your family? Are you of Asian/Hispanic/Indian/Black heritage? Are you overweight?
Also, please don't be fooled by stereotypes and myths; diabetes is not acquired overnight from a binge on snacks or sweets. As a matter of fact, there is no evidence to suggest that diabetes can even be indirectly caused by consumption or craving sweets.
Also, I've never heard of shivering at night being a symptom of diabetes but that may just be my unique experience.