I have had no sex drive and i am 17, why?

See your doc: You should see your doctor and have hormone levels checked and be checked for other conditions that can cause this as well. If it is felt to be psychiatric in nature than your doctor will refer you either to a psychiatrist or a psychologist or both. I'm sure the things will work out alright for you. Best wishes. By the way, in the event that your testosterone level is low please remind your family doctor that sleep apnea can cause low testosterone in your age group and that you should be checked for that.