If you have no intentions of any form of school, what do you want?

As far as your mood swings and other symptoms, no one here can diagnose you. If you are struggling you need to see a T and perhaps a pdoc that can diagnose you and perhaps suggest a medication to try.

I would recommend that you see a gyno too though and have your hormone levels checked. They can do that with a blood test, if your hormones are off then it can through you off emotionally big time, believe me, I have experienced that first hand.
Also if your thyroid is not right, that can lead to these kinds of symptoms as well.

The rule of thumb is to talk to a GP/Gyno/pdoc. You are 18 and can make that choice, at least if you are in the states.