HELLPPP how to talk... 10 points to the best answer!!! PLEASEEEE?

ok, so a couple of monthes ago, i came up with the idea that i might have bipolar disorder. i know it sounds really random, but there were lot of things leading up to the umption. i have a month (or even a week) where everything is bad, i just can seem to be happy.. (basicly depressed) and then all of a sudden, im i dont know how to explin it... hyper, and evrything seems fine, i do impulsive things... i dont know how to explain, anyhow, i did a lot of reserch, i did online tests (and yes, i know this is not a diagnose) but i concluded it has to be bipolar disorder. so i told one friend, and she told me to go talk to someone that can help me, but i have a "fear"for talking about my feelings... i HATE our school councelor, he is a jerk, and gaah, i really dont feel comfortable talking to him. i have a very bad relationship with my parents, and i would never have the courage to talk to them about it. em.. trying to keep this short :\ so there are 2 teachers, my dutch teacher, and i have talked to her before, but not about his at all.. and our dance teacher, both are not much older than me, and i guess i would feel comfortable talking to them, i just dont know how.. i mean i cant just walk up to them and tell them "hey, i think i might be bipolar.." but i am the lamest person you will ever hear from, and i just "dont" talk about this stuff to other people.. i keep it to myself, and until now, its been ok, but i just cant hold it in anymore.. and i dont really want to talk to my friends, because they cant "help" me... a teacher can. so the question, how do i deal with this.. i just cant keep it all in anymore.. and i dont have siblings (close to here..) and my parents are not an option, and i dont have the money to go to a shrink or a psychiatrist, so my only options are my two teachers, i just dont know "how" to tell them... please help, i really cant keep it in any longer...