You might end up diagnosed with "Psychotic Disorder Not Otherwise Specified" rather than Schizophrenia. Because of your age there are all sorts of other things it could be, including a stress or hormone induced psychosis which you can grow out of. Nobody on this forum can tell you whether you have schizophrenia or not, it could be psychotic depression for example, which is treatable with anti depressants, and usually lasts no more than a year when appropriately treated. So don't panic yet... It doesn't have to be schizophrenia, and the chances are fair to good that it won't even be a lifelong thing. If it's depression for example you can have other treatments besides medication, therapy for example, which will help alleviate the symptoms.

You say you're afraid your parents will think you're crazy... isn't it more the case that you're worried you're crazy? Your parents will love you and want the best for you, whatever happens, that's the truth of it. When I finally got around to telling my Dad it went far better than I'd thought.