I have taken online tests for bipolar and they all say I have it and I do not know how to go to a doctor about it. My mum thinks I do because my dad has it and I suffer from the same problems at school
Do I have bipolar
If your mum thinks you have it, the easiest way would be to talk to her about it and ask her to take you to the doctor. The doctor might refer you to a psychiatrist, as this is a specialist area.
If necessary, you could go to your family doctor yourself, or even to another one. I think, if you live where I think you live, it shouldn't cost much, if anything. But it would be best to have your mum on side.
Bipolar is treatable. Is your father on treatment, do you know?