Anxiety depression and tremors and fast heartrate. what do i have?

Need more info: Your listing of these symptoms does not provide enough information for a diagnosis. In order to make sense of what you're experiencing a doctor/mental health professional would need to conduct a full initial evaluation. Additional assessment would allow a doctor to rule out various possibilities, narrowing down the list until a diagnosis is made. Sometimes people have a combination of issues.

Anxiety: Are these symptoms consistent or come and go?. Are you on medications or have thyroid disease?. Just to be on safe side, check with your pcp to rule out organic factors before settling with diagnosis of anxiety based on just symptoms.