Suffering from Schizophrenia ?

For a long while, I have suffered from various symptoms. I have hallucinations of shadowed figures and black butterflies that make me paranoid and freaked out and sometimes leads to losing myself to my mind. I also suffer from depression as it was diagnosed a few years ago. I have had multiple manic episodes where I feel like I lose control. I also hear voices in my head that speak to me and comment on my actions which is very distressing. I also have uncontrollable rants where i play out verbal scenarios and can't stop myself until I finish and they commonly end up violent. Lastly, I lose control of my mouth and another voice speaks out of my mouth without my knowledge of it until I hear it. While these symptoms have been around for years, it was not until recently that I was able to mentally accept that it was all in my head. At this point in time, I know it is just my mind working against me. Im sure I've left some things out that I will remember later... My concern is that while from what I've read, I have various symptoms of this disorder, but various people have said that that is impossible because I realize that that I'm having problems. Can someone please shed some light on this so I can find out if I need treatment. Its stressing me out and making me dysfunctional to the point where i have no motivation and no ability to do even the simplest of tasks. Thank you for your time.