Why am i turned on all the time?

I'm 16, i dunno why but im like SUPER HORNY all dayy longg! is there something wrong with me? are other girls like this? Geez! and i don't have a boyfriend or anything so its like annoying! and when im next to good looking guys i just want to like bang them! but im not supposed to be like this ...im a girl! ughhh! how can i calm myself down!