Need some help with my orientation

Hi, I am almost 18 years old male, and started to question my sexuality. It all started about 3-4 months ago. I had/and still have HOCD (Yeah I know what some of you think about this). I have always been attracted to girls, and had very strong two/three crushes on them. The first crush happened when I was 15 years old. She was the only girl I was thinking about for almost a year. She lived almost 1500km from me.... So after the summer, She would`t talk to me anymore or anything. It was hard, but I got over this. The second one happened when I was 16 years old, but I never could ask her out. I had crush on her also for about a year. I was never interested in guys. So now back to my story. It all started about 3-4 months ago, I thought about my mate that he was very good looking (I never did this before). I had a massive panic attack about what happened, and I could not let the thought "Am I gay" go away. It was either straight or gay, I never thought about BI. I had then anxiety for about 2 months, and lost about 4kg the first week. I read that too beat this you need to stop thinking about it. And so I did for about a week. And BOM, my sex drive for girls went from 10% to 110%. I could forget about this and every thing. Then I got health OCD. I thought I had cancer(lol). Just a bit of cough and I knew I was dying . Now I started to realize it was the OCD whole time, and how stupid everything was. But I must admit that I started to find some man attractive. I am very confused. One day I am attracted to girls, and another I am attracted to some man, and even some days I am not attracted to anyone. I am always fantasizing about girls when I masturbate. I always wanted to have sex with girl, because it turns me on so much. I never wanted to do anything with man. But I just like that started to find them attractive. And I don't understand why. Am I bisexual? I really feel like I am. Maybe I am 2-3 on Kinsey Scale. Are terms like Bi-romantic real? Because I think I could be "Bi-romantic". Thanks for any advice. Also what does it mean to be Bi-curious.