Often i feel like people are watching and following me. one day i heard a voice inside my head telling me to do violent things. on another occasion, i had vivid shifting dreams and they partly continued when i woke up. should i go to the hospital?

Psychiatric eval: If you are hearing voices instructing you to engage in violence, that could be a medical emergency. Your frequent sense of being watched & followed is also concerning. If you don't have imminent thoughts of harm to self or others & aren't currently hearing voices, would start by seeing your medical provider. However, seek emergency care if you are hearing voices now or might engage in violence.