I think I have BPD but i feel weird about it because of people online faking it

I recently found out about BPD and i have never resonated with symptoms more. I always feel like everyone hates me, i make impulsive decisions barely thinking about the future, i have major mood swings and go from being super angry to not even caring about the situation even if it was worth being angry over. i’ve always hated myself for that one. i have sometimes compulsively self harmed because of the strong feelings i felt and completely regret it later. i very often dissociate and go into a dream like state, i always wonder if everything is my fault and if nobody really likes me. the list goes on. the problem is a) i feel like my parent would never understand because i don’t think my mom really believes in therapy and that i could maybe not be the normal and b) i can’t help but think i’m just a teen girl that’s making it all up for attention. i mean what if i’m just imagining all of it? idk what to do so pls put suggestions, advice, etc.