Psychotic Features without depression

I have had psychotic features during severe depression and stress for years, but in the last couple of months I have had delusions when I am not depressed or manic.  Nor am I stressed.  Could I be schizoaffective?  Also....I have always sensed that what I was believing COULD possibly not be real, but there is one thing I think constantly that I don't have that sense about.  How can I tell if it is a delusion or not.  My therapist thinks it is.

Thank you.

[HFHS.MD-AJ]

Schizoaffective disorder is characterized by symptoms of schizophrenia (such as hallucinations and delusions) occurring concurrently with symptoms of depression or mania; during the same period of illness, delusions or hallucinations must occur for at least 2 weeks in the absence of prominent symptoms of depression or mania.

Delusions are false beliefs, out of keeping with a person's cultural and intellectual background, that cannot be corrected by reasoning.