Late adolescence and early adulthood are peak years for the onset of bipolar disorder.
There are lists of criteria for someone to be so diagnosed as bipolar patient.
These depend on both the presence and duration of certain signs and symptoms.
There are few reasons why you mustn't delay the visit to your doctor:
First, she/he is the one who can give the right diagnosis, excluding other diseases like problems with thyroid gland, anemia, metabolic disease, chronic disease.
You can't expect not to go too far with the disease.
If you are really bipolar, you should be treated with drugs all your life, to have productive and happy life.
Left untreated, this disorder tends to get worse overtime (you put your self on risk to make something that will have huge negative effect on every aspect on your life), experiencing more frequent and more intense, severe episodes of mania and depression.
Very important reason, to visit your doctor is the suicidal thinking you have.
Is common for bipolar patients, and, means that you need medical attention as soon as possible.