You need to see a doctor, who will assess your symptoms, and most likely to tell
you to come back in two weeks, to see if
you are still feeling the same. That is a requirement by the DSM-IV criteria. Then you'll be referred to a psychologist, who will also assess you in more detail and then work on treatment. This is a long process, but do not ever give in, as hard and demanding as it may seem, stick in there, the therapist will also help you with all that.