Fiancé with disorganized schizophrenia?

We have been together for three years and have been engaged for nine months. He has schizophrenia and OCD, and I have borderline personality disorder. Lately he has gotten worse, and is currently in hospital for an acute psychotic episode, because I couldn't cope. in turn made me worse in terms of borderline (more aggressive, 'hating' him and self-harming more often).I attribute this to being stressed about him and scared as he said that the voices are ganging up on him and saying to rape me. I am also seven weeks pregnant, and I do not know if I should keep the baby. I want it but do not know if either one of us will be well enough to be good parents - I worry about him more than me though. Can anybody give me advice? Thankyou