Answer:
You need to schedule an appointment with a psychotherapist or psychologist. Only these doctors can diagnose any psychological disorders that you may be suffering from, or determine what is causing your symptoms.
See the related link below to a website that has more information about bipolar disorder, including support groups and answers to common questions. Only a doctor of psychology can diagnose bipolar disorder.
If you have bipolar disorder, you may be prescribed medication to keep it under control.