(If i do break any rules, please let me know and I’ll delete the post immediately. Thanks.)

Hi. I’ve been dealing with mental illness for longer than i remember. I’ve been going to therapists for six years; I’ve been to four different ones so far. I’ve been diagnosed with general anxiety disorder, major depressive disorder, PTSD, OCD, and ADD; I’ve been on meds for anxiety and depression for five years, ADD for one, and i feel like it’s not working. 
My depression and anxiety meds seem to somewhat dull my depressive moments, obviously, but, they don’t really do much or fix my mood swings. I started keeping a mood chart a while ago because i wanted to see how i think, and i noticed patterns of depressive episodes and patterns of what i now know may be mania, both of these extreme. I started researching my symptoms, and found bipolar II. After more research, i talked to a friend who is diagnosed with bipolar II, who says i do show symptoms of manic and depressive episodes, and i should seek help; but I’m scared to. I’ve been diagnosed with so many things I’m afraid my therapist and family won’t believe me. I’m scared to seek help because of that. I don’t know what to do, and I’m sort of scared. I also feel a sense of some sort of weird thing, where there’s a part of me that feels like I’m faking it or trying to get attention, even though I’m pretty sure I’m not, and this would explain ALOT of my actions for the majority of my life. Should i ask for help? Or am i just overreacting?