Manic depression, Psychosis and Scizophrenia

I have Manic depression, Psychosis and Scizophrenia. I have recently been diagnosed with a MASSIVE RUPTURED DISK AND "many degenerating disks" in my lower back. I take Paxil CR, Xanax and I WAS taking geodon. I had to quit taking that because it made me urinate myself and my bed every single night.
I have become more and more depressed each and every day. I have lost my job, my car is being repossessed and I am being forced to move out of my house and into my grandmothers apartment. I am 35. The only time that I am happy or something close to or resembling happy or when I dont feelk suicidal is when I am with my girlfriend or asleep. However, I feel as though all of my conditions are driving or pushing her away! I dont know what to do. I want to die all the time and yet I cant do it! If I lose her, I will lose everything!! What can I do? I have NEVER felt this depressed or alone, yet this is the first time in my life when I have been in a relationship like trhis, with someone that I TRULY and DEEPLY LOVE!!