Flat affect/reduced emotions

I have MDD with psychosis (schizoaffective in a few months) and I'm wondering if a lot of depressed people have flat or blunted affect. I feel emotionally drained most of the time, being in a major depressive episode and psychotic episode. Usually my mood is severely low and I feel anger, frustration, and sadness, but this is the first episode that I recall feeling flat. I know some people have flat affect with depression, but it could be early schizophrenia (paranoid delusions, disorganization and poverty of speech, apathy, flat affect, etc.)