Since my teenage years I've had many insecurities, but I think the one thing about myself which I'm most insecure about... is my intelligence. I really struggled academically at school and even after my diagnosis it was still difficult as I wasn't able to get extra support I needed. Of course I successfully graduated but I believe I only barely just passed with the grades I got. That is one of the reasons why I consider my high school some of the toughest years of my life so far. It wasn't all bad there were good moments but still it was rough. But there were subjects at school which I excelled at which were mainly, English and Art. I also thrived better in drama and performing as well as music, which is how we came to the realisation that I am what people call "Artistically intelligent". Though I do have a knack for history as well but everything I know about history I learned when I watched from 'Horrible Histories' growing up as it was one of my favourite programmes when I was younger, I actually learned more history from that than history taught at school which was to me was more difficult to follow than on tv.
Anyways, I started feeling insecure about my intelligence round about the time I started high school. There was one incident that sticks in my mind which I think maybe where it spawned from. I was given math homework and with math being my most hated subject of all time I usually had to ask my parents for help on some if not most of it. So, this particular night after what felt like forever, I finally finished but I decided to ask my dad to go over it to make sure I done it right. But when he then quizzed me on a particularly hard question and I gave what I thought was the answer, out of no where he then shouted me in a really annoyed tone saying not only was I wrong but that apparently that he confused at how I could get it wrong when it was a supposedly easy question. I can't remember whether he apologised to me for that or not, but I just remember how hurt I felt in that moment, like I was really stupid. Even after I was given my diagnosis there had been times where my parents would get annoyed and frustrated with me whenever I didn't understand a seemingly "easy" question or when took an instruction too literal. Luckily incidents like that don't really happen as much anymore but there are times where I feel like my intelligence or 'lack of intelligence' is laughed at and mocked. Like for instance what really makes me angry and upset is when I happen to say an interesting fact about something we were talking about and they sometimes laugh/snicker and they've now started saying I have 'moments' which they now refer to as "(my name)isms"... like what is that supposed to mean?!
Now I'd like to point out that I'm not trying to "villainize" my parents as they are good people, I think there's certain aspects of my autism which even now they struggle to understand. Plus I don't think they do or say these things to intentionally hurt my feelings but I does as these moments have now left me questioning my own intelligence. I do have to keep reminding that I am smart in my own way, I do have special knowledge of certain things which I guess you can call my special interests... but it just doesn't help when my parents sometimes calls my little facts "useless information". I guess I'm writing this as I feel terrible as I finally snapped at my parents for it earlier and I feel bad and will defo try apologise when i've calmed down 
What do you think?
Am I overreacting?
Am I being too sensitive?
Has anybody else been though this or is it just me?