I can't tell if i'm depressed, bipolar or just emotionally volatile. what do i do?

Get evaluated.: First see your family doctor to have a physical cause for your depression ruled out. Family doctor will then assist you in a referral to a psychiatrist who will provide medication for you and do a comprehensive psychiatric evaluation. It's also possible that your family doctor will treat you themselves. You should also see a psychotherapist because the combination of medication and therapy seems to work the best.Other things like exercise, yoga, meditation, maintaining a healthy diet, and acupuncture can also be very helpful.