“I know my body better than some doctor”
No you literally do not. You did not attend 12+ years of medical school, you did not spend hundreds of thousands in tuition and have student loans for the rest of your life to get a medical degree. You do not, in fact, know more about your body than “some doctor”. Surprise!

Okay. yeah, that doctor has a lot of training. 12 whole years. Maybe they know The Generic Human Body better than you. In fact, they probably do.

But The Generic Human Body, the one used in basically all education and medical testing, is an abled, cis, white adult man.

If you are not an abled, cis, white, adult man, there is an extremely good chance you know your body - the individual one you’ve lived with for your entire life - better than the doctor in question.

While we’re at it: When I was a teenager, I wound up in psychiatric and psychological care. I was being seen by two professionals, who combined had been trainning longer than I had been alive - never mind their actual experience.

They misdiagnosed me. Horribly. They thought I was bipolar; I was depressed. It almost killed me, and did in fact culminate in getting my stomach pumped, spending a week in psychiatric ICU on suicide watch, and permanent aggravation of my sensory processing disorder - the SPD that came with the extremely blatant autism that these Learned Professionals completely missed.

(Funfact: The drug that aggravated my SPD? I was in the trial group for it. I’ve recently gathered - with my tiny-ass reach here on tumblr - a dozen testimonials from other people with SPD who had reactions to this drug. It’s still not listed as a possible side effect or contraindication.)