Sorry you are going through all this mess.

Reading your post your up and down alot . There is a good possiblity that alot of it could just be the dreaded hormonal stuff. Maybe see your regular doctor , just have some basic blood work done, rule out thyroid problems and such.

Of course it is possible you might be Bipolar , of course none of us here can diagnose you, and Doctors "typically" wont toss that label on you at your age. Even adults often go many many visits before a diagnose of it, now that doesnt mean you would be possibly started on medications, all doctors vary.

If your not happy with the current Psychiatrist by all means find another one. Getting some Therapy would be really helpful.

In the meantime try to not over analyze every feeling or mood you have, Just go do your daily stuff.

Welcome to PC