How will i know if i a bladder infection?

i dnt kno if i hve a bladder infection. but theres something happenin to me. i can't hold my bladder longer. .i kno dis will sound funny to yall but i peed maself twice alrdy. n ma pee color is really yellow dark yellow. n wen i pee it turns me on bad. yea idk. . but i need answers