Open Question: I was diagnosed with psychotic depression even though I never had hallucinations or paranoid delusions?

For this may be that difficult for me to let my thoughts, and when I told him the problem. i stammered a lot, it will for me minutes to a setence. This may be due to excessive rumination, but there are anxiety related. However, it still needs a psychotic depression diagnosis? This may be patients with severe depression? Please help commonplace, I have already speculated about this for a very long period of time, cause I have never received a clear explanation of the psychiatrist. I would like to know if there could be another basic conditions, distorted diagnosis. Thanks