My mother keeps telling me to "get in control" of my head and "just say no". Any advice on how I can make her understand better ?

So I recently got diagnosed with ocd, and due to me growing up in a household who doesn’t believe in it I have an even harder time grasping if it’s a real diagnosis or not. I know it is but my parents still get mad at me when I tell them not to reassure me and things like that, since they don’t want to understand me anytime. They always put the blame on me and they do everything and how I’m ungrateful. I am very greatful but I told my mom to try to understand this condition but she refuses to, my dad just completely ignores that it exists. It’s just hard to cope around it and not be stuck in a loop, I’m leaving in a few months after graduating so hopefully that will help. It’s hard when my parents don’t want to try to understand what I go through.

She laughed and said that everyone has these thoughts "i didn't tell her about the REALLY fucked up thoughts i experience cuz i was kinda scared" and then she said it's the demon just say ur prayers and they'll go away Even though i kept on trying and trying to convince her that they're clearly not normal but she kept on refusing and it kinda sounded like she didn't want to admit and believe that her daughter has a mental illness which sucks

my mom has been on this adhd kick where she thinks everyone has adhd instead of what they actually have because apparently it can present itself as anxiety. well i told her i was taking prozac because that’s something she needs to know since i still live at home. and she’s fine with it because it’s my choice. however, she comes into my room because she sent me a video about adhd. in the video, at the end, it says “girls with adhd may develop perfectionist or obsessive compulsive tendencies.” THEN, she has the audacity to tell me my compulsions didn’t start to show until after high school when that isn’t true at all. i just never talked about it, but of course she doesn’t believe me. i just feel so invalidated because after all of the hell i’ve been through, to be told i don’t have what i most certainly am positive i do have is atrocious. i would lose my mind if i was told i didn’t have ocd because of the intrusive thoughts i get that make me feel like a terrible person. i feel like being told that sets me back so far and makes me want to thought spiral a bit. i’m so upset.