I am so sorry you are having so many difficulties. But this isn’t paranoia. What I hear is a young woman who is persistently courageous in trying to figure out what is wrong and trying to fix it. At 14 we need someone on your side as it seems your mom and dad haven’t been much help. If I’m wrong about that (and I hope I am) ask one or both of them to take you to a therapist. If that seems too much of a stretch for them to do — or they are unwilling — ask them to take you to a physician because you are not feeling well, which is true. When you talk to the physician ask him or her to help. They can help you understand why your moods fluctuate and what you can do about it.
You need an adult to help you get to the next level so it can be determined what will help. Perhaps a teacher of school guidance counselor can lead you in the right direction. If there is a family member, a grandparent or aunt that could help that would be good. The point is you did a brave thing by reaching out here and I am encouraging raging you to take the next step and reach out for an adult who can help you.
Wishing you patience and peace,
Proof Positive Blog @ PsychCentral