Questioning if I'm Bipolar: Seeking Advice

I may be Bipolar. I have been questioning if I’ve been Bipolar for awhile and finally decided to do my own research on Bipolar Disorder. I find every symptom and description to Bipolar very close to how I’ve felt for the past years, like.. exactly me.. and I never felt so heard before. I always knew something was off about my depression. A few days after a depressive episode I would have lots of energy to go around, and then hit a low and would have no energy only a few days later. (I later learned that the ‘high’ parts could be considered Mania and Manic episodes.) and when I’m in this state I often will do or say impulsive things. Like I’m 2 totally different people; and it seems to be out of my control. (There is so much more of the symptoms I have regarding this, but I’m not gonna get into it.) I’ve been taking some tips and things to do before being diagnosed online and have written out my symptoms and extra notes (for the psychiatrist ofc.) So, I’m planning on getting a diagnoses for Bipolar Disorder.. does anyone have any more tips, advice, or anything to look for when getting diagnosed with something like Bipolar? I’m going to have my psychologist refer me to a psychiatrist for an appointment on Wednesday.. and I’m kinda nervous, I really don’t want to jump at her with all of this.. I’m mostly uncertain about telling her more because I feel like she may doubt me.