im seeing a therapist next week for the first time in about 15 years. i was in therapy from ages 5-18 and i hated it, i felt like they sided with my mom and brushed me off completely. ive decided to give therapy another shot now that im an adult (without my mom) to hopefully better myself for my fiance and daughter. when i was little i was diagnosed with anxiety and depression but i feel theres more to it than just that, especially now that i know the mental health history of my biological family (pretty much everything under the sun). i have looked into what i think i may have obsessivly for years and i have many of the symptoms and my fiance agrees with me as well.

my question is, do i tell my therapist that im pretty sure there is much more than my depression/anxiety or should i just tell her my symptoms and leave it up to her to figure out? should i tell her straight up what i think i might have or do therapists not take self diagnoses seriously? im paranoid im going to be brushed off as a hypochondriac or "looking too much into things" but ive had these symptoms for either half or majority of my life and im sure i was misdiagnosed as a child or maybe my symptoms werent as severe back then.

hopefully this made sense, i have a hard time putting into words the things i want to say. and i also apologize if this is a stupid question or has obvious answers.