I think that you need to first get an official dx before you label yourself with anything. Having bipolar is serious and can't be taken lightly. If you are certain that you have it, talk to someone. If your mom is the one who can get you to a doctor, maybe write her a note telling her you need to seriously talk to her. Push it if she brushes it off and tell her you're being serious and you have a problem and you need answers. You don't want to end up hospitalized like many people (including me) who get this diagnosis.

The earlier you inform someone and get a doctors opinion, the better off you'll be. You can have your mom bring you to a GP first and he can refer you to a pdoc or t.