The symptoms are the same for everyone.

Since you are young, its most likely type 1 diabetes and the symptoms may include one or more of the following:

Excessive thirst

Frequent urination

Extreme hunger

Unexplained weight loss

Fatigue, or a feeling of being "run down" and tired

Rapid breathing

Blurred vision

Dry, itchy skin

Headache

Tingling or burning pain in the feet, legs, hands, or other parts of the body

High blood pressure

Mood swings

Irritability, depression

Frequent or recurring infections, such as urinary tract infections, yeast infections, and skin infections

Slow healing of cuts and bruises

Many of the symptoms of type 1 diabetes are nonspecific—that is, they may be indications of any one of a number of different medical problems. If you’re experiencing any of these symptoms, please contact your healthcare provider immediately for medical evaluation.

For the symptoms of type 2 diabetes, which usually affects adults and overweight young people, see this link

http://www.dlife.com/dLife/do/ShowConten...

Tell your doctor all of your symptoms and then ask for a fasting glucose tolerance test, and an HbA1c test.

If you have diabetes, getting a diagnosis is the best thing that can happen to you, because once you know what is wrong, you can get treated and start to feel better.

Good luck!