Okay, I recall you having previous posts about your mother isolating you, so I'm going to hazard a guess that your family life is not great.
The worst part about fucked-up families is they can really fuck up how we view the world. My mother's verbal/emotional abuse made me believe that her physical abuse wasn't abuse (I literally didn't think that her hitting me with a hairbrush was abuse) and prevented me from seeking treatment for my (according to my psychiatrist) really intense depression until now (10 years after I first contemplated suicide).
This creates a shit-ton of problems down the road because the ways we learn to cope inside the family are not good ways to cope outside of the family system. I learned to shut down, be silent and just cry quietly until the fight was over. While this served me well inside my family, it turns out that's a terrible way to deal with conflict outside of my family.
I say all this to try and provide some context for my next suggestion. I am not (even close) to your situation, but I have survived (am surviving I suppose) a fucked-up family and I have looked back at my actions and been baffled at what I accepted.
I would really, really like you to try and get some therapy. If you are dealing with schizophrenia (or something related) and depression (it could be bipolar, manic episodes can include hallucinations) then you should consider medication. Everything from ADD to Depression to (especially) bipolar and psychotic disorders have real, measurable, clear impacts on the brain that we can treat with medication. It's not perfect, but it's a lot better than suffering. You can get a prescription from a regular doctor or a psychiatrist. I would suggest a psychiatrist if you can get one, they're more knowledgeable about the specifics of medication and will often provide more complete information if you want it.
I would also suggest you get a counselor/therapist. Your school counselor might be a good start, but I would advise
Psychology Today's Database. Just enter your State and it'll give you a list of therapists in your area that you can filter by practice, gender, and specialties. If you can sell the idea to your parents or make up a reason to go (maybe self-esteem issues, body-image or school problems) once you're in the office the therapist is legally required to keep your sessions confidential*. A good therapist will not let your parents come in without talking to you alone first.
Therapy really, really helped me to see the ways that my mother had messed me up and has helped me learn new coping skills and how to take care of myself. It has been a huge breakthrough for me and changed how I see my life.
I would really, really advise you to be careful in this relationship. The systems we learn in our family can lead us to accept and rejoice in things that we later find abhorrent. I'm not saying your relationship is bad (I don't know enough to say if it is or not) I'm simply saying that your history opens you up to greater risk of dysfunction. Add that to the high level of risk already present in long-distance relationships and you can see why some people here are really concerned.
I would really like you to seek some help and make sure that you're keeping yourself safe. If you can, get out of your house as soon as possible (personal recommendation: graduate early if you can and go to a college out-of-state). Please take care of yourself.
*There are three situations in which a counselor must break confidentiality: When there is a real, credible and immediate threat to yourself or another, when a child is being abused, or when they are asked to by a court
