I think im bipolar , can you help me ?

a family member has it and i think i have it to , im happy one minitue and the next im sad and i had sucide attempts but im to afrade to say it to eneyone , esspesly at night i get all deprest and sad and would cry my self to sleep and it happens durin the day , iv been said to have asburirs but i dont think that what it is . i have rely bad mood swings like i can be happy fore about a week but then sad and lonly and fell like killin myself for maby a month , and rely eney ting makes me sad in school people calll me names people that dont even no me . i just feel unwanted i need help?