Am I bipolar? Been on anti deps since 15, now 22, im about to lose my mind over these mood swings, and I don't even know who I am anymore.

Maybe. Mood swings can most definitely be a sign of bipolar disorder but can also be from other causes like borderline personality disorder, medication side effects etc. Talking to a psychiatrist can be very beneficial and should be pursued.
If you are not sure, You need to have a talk with your doctor. And, treatment is about being stable. If you are still experiencing mood swings, you must tell your doctor so that he can help you.