Premonition that i might die?

Dreams have no predictive value. They tend to reflect whatever you were thinking about when you went to sleep. The truth is that you WILL die. Everyone does. You just don't know when. Your expected lifespan can be statistically predicted based on your medical history, lifestyle choices, etc. Have an honest, detailed discussion with your doctor, covering both your symptoms and your fears. Don't expect a meaningful medical diagnosis here on Yahoo Answers.