sorry you had those experiences...

well,
first - just because you have medicine does not mean you are magically better, im taking medicine too, and i have been on a lot of medicine before and my symptoms still were bothering me.. although not as severe (mainly because i was pretty doped up..)

so first medicine doesnt fix the depression, it just tries to help relieve some of the symptoms so you can hopefully work through it... and hopefully it will resolve and maybe you can come off the medicine one day ...
but you could be like me.. i have severe recurrent major depressive disorder... i've been depressed for my whole life, in and out of episodes... but the depression is always there... for me even when i feel a little better its a weight i carry like "omg i feel better but when is it going to come back!? i dont want it to come back!!" and of course it comes back pretty soon...
so medicine isnt a cure ... its just a crutch

second... they should not say they dont want to take you to the doctor because they dont want you to use that as a crutch or excuse or anything like that, if you are struggling and having problems you should get professional help... doesnt matter what you think it might be or might not be... professiional figures that part out...

i have never used any of my diagnosis as an excuse for anything... although i probably should sometimes because people dont understand why i am the way i am...

the bad thing is that its good to get it checked out early, especially if you're experiencing it as a child because some things can progress and get worse with time...
like my depression... and maybe if i had treated the adhd when i was in school i wouldn't have dropped out and would be through college and stuff by now! (im 26)

have you read about MCI (mild cognitive impairment)?

are you seeing a psychiatrist now?
if you are experiencing difficulties in life because of these things i would definitely do it...

self sabotage is... i think simply its when we are causing the opposite of what we desire... we want to be happy so we make ourselves sad.. we want to feel good so we hurt ourselves... we want to write a paper so we forget about it... we want to study so we play a video game... its also when you talk bad to yourself, calling yourself names and putting yourself down... this stuff we dont really do on purpose, i do it - honestly i dunno why - i try not to though :/

here a little article on self sabotage Self-Sabotaging: Why We Get in Our Own Way

you know yourself better than anyone else, no one else can tell you how you feel, right?
so just because someone does not understand don't let it put you down... maybe can try to educate that person if you want or just seek help without them...

i hope that any of this is helpful a little