Am I Homo, Bi, or Hetrosexual?

I am confused, sometimes I have a voice in my head likeing both guys and girls, except it seems to be more guys than girls. I sometimes make fantises of guys, and a bit girls. Sometimes Im conpletly sure I am bi/homosexual, but others I couldnt feel more stright. I am wondering if I should listen to the bi/homoexual side (meaning is this my mind telling me my true feelings?) or the hetrosexual? Normaly during the bisexual times, I feel more inclined to masturbate, except after it I change right away. The bisexual times I feel more ashamed of when Im with others, because I feel diffrent but, sometimes I feel like Im talking to another me, which is awesome because the other me is a halarious person. I have been questioning this for some time, and fianaly dicided I needed an outsode opinion. If this isnt enough information, just ask and Ill try to check every night to respond.