anyone who suspected you had adhd and ended up wrong?

hi! i am not diagnosed, but i have done a lot a lot of research and do i suspect that i have adhd. i've spent basically almost ten years trying to figure out what's wrong with my brain, studied psych for a bit in college, pretty desperate to find an explanation, but have struggled to actually seek professional help bc my parents don't believe in it. i never looked into adhd until the past year bc i just knew the stereotypes of hyperactive boys, so i never knew it was different for girls/women. i've mainly researched how it is in women, and i was shocked to find that i've experienced almost every symptom. while i'm not self-diagnosing, it feels like something that would explain so much of the things i've struggled with.

i'm a bit hesitant to seek professional help because the thought of approaching a doctor and being wrong just makes me anxious. i don't really want to seem stupid or anything like that... and i'm a bit worried i'm just making up the symptoms, so when i actually try to get an evaluation, they're going to be like wow you are actually so dumb for even thinking you had this lmaoooo.

i know this is a stupid question (sorry), but is this like... a completely ridiculous thing to think... or are there a lot of people who (seriously) pursue testing that end up with a completely opposite diagnosis?