Should I become gay or get a sex change?

I am only 14 but I am convinced something is wrong wit me I am a male physically but alot of people tell me I act like a girl and I do kinda like wearing girls clothes and for some reason no mater how hard o try I can't get a girlfriend I'm so tired of bein confused but either way it goes I have decided to change my name to Jeanette and my sister says she can do that for me since she is my legal guardian she is 24 does anyone have any advice should I go they with this