I'm 19 now, i was diagnosed bipolar 4 years ago, and i've been feeling well since 2012. could it be misdiagnosed coz some docs say i don't have it?

Controversy: Experts can disagree especially in mild cases. W/o solid lab or imagry, mental health DXs can be challenging. If your symptoms are relieved now and you stay well for some time w/o medication - I'd side w/ the negative Docs. Even if you may need some help again in the future, it seems a mild condition. Names can be but are not always useful. Take care, learn to manage moods in CBT therapy.Do well!