Hello there.... I have major depression with psychotic features... it can come on without people noticing...
Though now, I am pretty much controlled (knock on wood!) on 20 mg of abilify and 3 antidepressants. I also have some OCD and can believe that I have health problems... not sure where the line is between the psychosis and the OCD in this case.
What I'd recommend is that you have a crisis plan in place and let your near and dear know what it is and how to respond when you are in crisis or pre-crisis. (Talk to your pdoc and therapist if you need help putting it together).
Know what your crisis signs are and tell somebody, as soon as they appear, in other words your prodromal psychosis signs.
Ask pdoc for a psychosis questionnaire that you can take home an self-monitor.