What does a diagnosis of severe anxiety and psychosomatic mean?

Mind-body: Severe anxiety = unnecessarily extreme fear or worry. Psychosomatic = a physical disorder caused by or significantly influenced by emotional factors (such as severe anxiety). These terms might be used in describing a problem that a person is experiencing.

Big words: Psychosomatic symptoms refers to physical symptoms that are caused by anxiety, not medical illness. They are real symptoms, not just "in your head"-- but they are caused by psychological or emotional factors. Find a good psychologist or psychiatrist to work with in psychotherapy and get help. The overwhelming likelihood is that your anxiety can be treated effectively.