Hi roboaxnia, welcome to PC!
Like Amanda said, we can't DX you, but we can share what we go through and tell you to talk to a professional.
Anyways, do you have a diagnosis already? I ask because you said you had a bout of paranoia and delusions. Self harm wouldn't be a far step from any mental disorder. You also mentioned that you were admitted a few months ago...how did that go?
Anyhow...feel free to keep posting, I hope to hear more!