Help, am i bipolar?!?!?!?

Hi, i was wondering, so bipolar disorder runs in the family because my aunt and my dad bother have it and i wanted to no if i might have it. So i have weeks and sometimes months were im very hyper and overactive and never tired, i gett the most awesomest ideas in my head but then i reallize they wernt that great or i just forgett and gett another one. I feel so full of energy........ and then i crash basically im depressed and just want to be left alone ill come home from school take a nap the wake up take a shower and go back to sleep but somehow im still tired and i just hate it im not happy i hate how my moods are and either way im either not concintrating because of my imagination or my depressioness but sometimes im okay i guess but i dont even know what that is anymore. :(