Unfortunately, it’s impossible to give a diagnosis via the internet. Your treatment team would be in the best position to answer your questions. I would encourage you to have this discussion with them.
It’s also important to remember that diagnosing is not an exact science. It’s common for diagnoses to change over time and to differ based upon the practitioner.
The voice you described is indeed worthy of exploration. In your view, it’s not your voice. It’s not clear to me whether it’s indicative of psychosis or simply a highly critical element of your personality.
In the examples provided, you responded to the stressful situations with self-harm. No matter the diagnosis, more healthy coping skills are needed.
You might ask your treating professionals about dialectical behavioral therapy (DBT). It’s an especially effective treatment for the symptoms you have described. It’s designed for assisting individuals in regulating their emotions, developing healthy coping skills, and in the treatment of suicidal and other to self-destructive behaviors. Though DBT was originally designed for individuals with borderline personality disorder, many therapists have successfully utilized its’ treatment components for other disorders. I hope this helps. Please take care.
Dr. Kristina Randle