I read tarot myself, but I would never, never ever use it to diagnose someone with an illness. I wouldn't even diagnose myself.

People all the time say "you're bipolar," but bipolar is much more than what media and everyday people know of it. The best thing to do is to see a psychiatrist and get a proper diagnosis, as hamster-bamster suggested. If you can't see a psychiatrist right away, at least see if you can get into a therapist or psychologist to begin working on the things that are troubling you.