Sexuality

Okay I'm a nearly 18 year old male and I'm in a bit of a pickle when i was 13 i noticed i was attracted to guys and I'm 17 now I'm I'm scared i don't know who i am anymore. I noticed guys more when i was around 13 it made m happy and feel right it made me feel that's who i am and I'm 17 now and i don't know anymore i feel like my attraction is fading and that I'm turning straight and I'm scared i don't know who i am I still like guys and there body's and cocks but I'm scared that's going to fade and somebody said it doesn't matter what porn you watch or what you think about I'm just scared I'm going straight.okay well i haven't had sex or anything yet but i remember at 13 looking at pon and focusing more on the guys and there cocks and that made me feel like me that it was right and i just loved the feelings. I dont feel like im not gay but i dont feel like i did back then and i dont get excited about vaginas to me its just ahole and boobs are bobs they dont get me excited and i have seen straight porn but i dont get into it when wanking like it doesn't peak my interest but i'm getting thoughts and images in my head of women and i dont want them like i have no desire to date them or have sex with them is this happening becuase im watching straight porn like im very open minded but i'm scared i'm turning straight. ANY HELP PLEASE. Also sacred people say i might be Bisex but i don't want to lose interest and forget guys. And like today i thought i have always like guys and i dont see myself having sex or dating girls I'm just so stressed and confused like my Brian's fuzzy