What a frightening situation. First, I recommend that you abstain from any mood altering substances such as weed and alcohol. These substances may trigger more episodes. Second, you need to see a psychologist, therapist, counselor for an evaluation. There could be multiple reasons you experienced an auditory hallucination. It is unlikely they will lock you up. Keeping people in their community and providing services on an outpatient basis is preferred. Do it soon because the sooner you receive treatment the faster and better your response. If you put it off and continue to have hallucinations, you may end up getting hospitalized because of the severity of your symptoms.