What "qualifications" do you need to be admitted to a psychiatric facility?

Must you be directly suicidal? I have "episodes" lately where I just feel completely chaotic and panic, and they come out of nowhere. I am not directly suicidal, but when I have these "episodes" its like, I will stare too hard at a bottle of pills and thoughts cross my mind, you know? Its not that I would neccesarily do that impulsively but I am worrying myself. I have depression, anxiety, mild OCD, Borderline traits (but not the disorder) that I know of. I just freak out... maybe they are panic attacks but everything feels dire and I feel like I'm not going to make it. I am extremely succeptible to stress, and I was wondering if these were reasons enough to check myself in, even though I am TERRIFIED to do so. I am seventeen years old. I have a psychiatrist and psychologist and am on medications already. I'm just worried about myslelf and am not trusting myself 100% anymore not to do something stupid. I've never told my therapists that I've had any actual desire to commit suicide beyond thoughts because I know what will happen if I do. What would the concequences of my actions be? Is it worth it to be admitted just for the "downtime"? Anyone who has been in, what was your experience like? What should I expect? I feel very alone sometimes because I cannot tell healthcare workers the truth do to their obligations. Thank you so much for any advice or input you may have, it is extremely appreciated.