I can try to offer some general information about the experience you described.
If you believe you are seeing a shadow person following you everywhere and it talks to you and can read your mind, it's essential to seek help from a qualified mental health professional. While you mentioned there is no history of schizophrenia in your family, it's important to remember that mental health conditions can arise independently of family history.
Experiencing hallucinations, such as seeing a shadow person or hearing voices, can be symptoms of various mental health disorders, including schizophrenia, schizoaffective disorder, or other conditions. It's essential to undergo a thorough evaluation by a trained professional who can properly assess your symptoms, rule out any potential medical causes, and provide an accurate diagnosis.
Several conditions can lead to hallucinations and other unusual experiences, and early intervention and treatment are crucial for managing such symptoms effectively. Regardless of whether schizophrenia is present in your family history, it's important not to dismiss or ignore these experiences, as they can be distressing and have a significant impact on your daily life.
If you are concerned about your mental health or the experiences you are having, please reach out to a mental health professional, such as a psychiatrist, psychologist, or clinical social worker, for a comprehensive evaluation and appropriate support. They can help you understand what you are experiencing and provide guidance on the best course of action for your well-being.