Psychosis / schizophrenia ?

Hi there, (and sorry about a longish post)

I suffer from severe OCD and severe unipolar clincal depression. For the last 2 years or so I've felt really detatched from everything. I feel as though I am almost thinking through treacle, that disconnect between what I'm thinking and doing is so strong. At times I feel like I can do anything I wanted to because it feels like a dream or just not real at all.

I've also had a few times that I've heard ringing in my ears (not like tinnitus, ringing as in church bells) which I honestly thought was real and on several occassions (although not many) I've heard voices that sounded like they were real.

I also think about everything I do, but in such a way that its me addressing myself. I don't know if this is a symptom of psychosis or not as I thought delusions were based on the person not being able to differentiate between a delusion and real life. I can tell that this is in my head but it is still a voice that is talking to me and I do essentially have mental conversations with it, where I talk to it and I ask/answer questions.

Last of all I'm always very paranoid. I think that this may be largely part of my OCD but it seems more than what I've seen some other OCD sufferers deal with. An example is when I thought everyone was trying to poison me and so I stopped eating. If it was OCD I would have realised it was stupid but I honestly do believe that everyone else was trying to kill me.

Are any of these symptoms of Psychosis/Schizophrenia? I wanted to know if anyone would know if any of these (other than paranoia) could be triggered alone by OCD or depression without being psychosis? I'm not asking for a diagnosis, just what you all think; whether it sounds likely or not.

I'd love some responses, I'm feeling really lonely with this right now.