Happy birthday!! I suggest that you corner one of your parents, tell them you really feel like you need to see a psychiatrist and ask if you can sit down together and look for one online that takes your insurance. You should also track your symptoms on a calendar or in a journal so the doctor can understand your cycles.

I think you should also read up on Borderline Personality Disorder. It's very similar in that your moods are extreme and all over the place, but the mood swings tend to be a lot closer together than bipolar. The other thing is that one of the symptoms is paranoia, that's what really caught my eye.

Try not to get attached to one label before you are diagnosed. It can be hard to accept a surprising diagnosis. In the end the treatment for mood disorders is very similar and getting good help is all that matters.