bipolar cases

Is bipolar disorder or just hormones?
For a while now, I've been wondering whether or not I have bipolar disorder, or a severe case of hormones active. I am a female teenager who is almost 15, and are starting to ask more from the new year this year. I've noticed in my behavior that I worry easily, and mourn with ease too. Sometimes I even get depressed without any reason. I also realize I'm very irritable and more. I had read articles Internet indicating that children and adolescents who can only seem high anxiety. That when I was a child I was diagnosed with high anxiety. I'm afraid to ask my parents to see a doctor because they do not want to worry or problems with something I think I have. I have not looked at the history of my family either, so I'm not sure if family. If anyone can help, thanks.
that might be a good idea to go see a therapist, Specalist, a psychologist, someone trained to diagnose mental things as bipolar. and as for problems of their parents, had the same problem when I was your age, I add and depression, when things get worse, i wouldnt help, and things kept getting worse. now my parents and the doctor and I are working on fixing things. But I'm sure your parents love you and I to be happy and healthy. [including mental health] and if they can help you for some reason [which I doubt] go to someone you trust in a position of authority, a teacher great in school, or coach someone. good luck sweetie!
AyA-Got a case of love bipolar!!!