How Should I handle Mild Bipolarness?

I suffer from mild Bipolar Disorder, or Cyclothymic Disorder, and I have no idea how to handle it.
My mother won't take me to a therapist anymore, and it's really beginning to mess with my normal day.
My friends are starting to see my mood swings, and they don't like when I suddenly go off on them and then laugh right after.
I don't know how to get myself help without my mother, who could care less what happens.
I don't know anyone that can help me.

Some things you can do: educate yourself about cyclothmic disorder by reading books, keep a regular sleep schedule, exercise at least 5 times a week, eat a good diet, get time outside in the sunlight every day, establish a routine and keep it. There is a book on Amazon.com that looks what you might need for about $14 called:
The Cyclothymia Workbook: Learn How To Manage Your Mood Swings & Lead A Balanced Life - Paperback (Jan. 2, 2005) by Prentiss Price

(I don't think the link will work but just search for cyclothmia on Amazon and this book will come up)

Sorry, that is cyclothymia... and I checked, the link does work

Just look it up on the internet since your mom want let it get treated that not nice that she want let you go too a doctor

Do you have a school counsellor to talk to? If things get worse, try and at least see your GP, and discuss if meds are an option.
Like has been mentioned - there is lots of information on the internet, and a lot of workbooks (Even free worksheets to download) to help you manage your condition