Feeling overwhelmed and hopeless due to family conflict

I am reaching out because I am in a very dark place right now and really need some human connection and perspective . My father constantly uses the fact that he pays for my medical bills as a way to harass and belittle me during even minor disagreements .

So a little history about my illness , I was diagnosed by an autoimmune disorder 4 yrs back , it's main modality of treatment is palliative care means I should be on the medical treatment for life long to stay in a stable condition without any flare ups .

And everytime when my father mentions Abt him paying my bills

It makes me feel trapped worthless , unlucky to have a father who always tortures me over my illness . I am at the verge of doing something drastic and I don't want to feel this way .

I'm a student right now and I'll be on my own within a yr max , i will be taking care of myself and my bills .

But everypassing day feels like a big task right now I don't want to do something stupid that I'll regret but at the same time I want to come out of this misery.

I'm struggling to cope , I am seeking for an advice on how to emotionally detach , please I really need some support right now .