I'm sorry to hear that you are going through with this.
Keep in mind that psychosis and/or hearing voices is not only associated with schizophrenia. Hearing voices has been observed in depression and bipolar disorder, too.
I think that you need further evaluation and to seek further treatment. I hope that you find out what is wrong with you and you nip it in the butt! Don't be so quick to diagnose yourself.

Edit: you seem pretty aware of yourself, so I doubt that you are going crazy. Anxiety can definitely make you feel as if you're going insane.