Hocd or bi?

Im a 17 year old young man, who had never questioned his heterosexuality until August 2019. This whole gay fiasco started cuz at that time I talked to a gay dude, who told me that he was straight and then turned gay. He also told me that he turned his friend into his bf. So this scared the cr@p out of me and I have been thinking about this ever since. Its highly likely that what Im going through is hocd as its clearly an obsession and all these gay thoughts were irrational and I still think about my sexuality 24/7 non-stop.
So lets talk a bit my sexuality.
The period before puberty :
I remember kissing girls and having girlfriends at the young age. My first time getting hard was cuz of imagining myself with a girl from a video game. Also got hard cuz of looking at naked women on TV. I used to secretly read my dad's playboy magazines with naked women there. At the age of seven I was sitting with my male classmate and in my mind I was like "He looks just like a girl, I wanna kiss him". Then I went to my mommy and told her about and she was like dudes dont kiss dudes. I dont remember if it happened before I discovered the difference between girls and dudes or nah( at that time I guess I didnt know how vagina looks) , but this memory never really bothered me and I never had a crush on a dude or desire to have sex with one. I started jerking off to naked picture of girls at the age of 10 or 12 and then got into porn at the age of 14. I have never watched gay porn. I have tried to watch it, but got immediately turned off ( The reason why I did this is constant questioning of my sexuality). So I have been having gay thoughts since the August 2019 and they would cause me a huge distress. I have had some panic attacks. I remember waking up in August , thinking like I had a nightmare where I thought I became gay, oh $#%^ it wasn't a nightmare. So these gay thoughts would cause a huge distress, anxiety and other bad stuff. And I cannot stop from questing whether Im straight, gay or bi. Another weird thing is that I notice dudes a lot and literally every man seems attractive( face of literally every man seems attractive) , I also notice their dicks sometimes. But there is no sexual/romantic desire for dudes. I have been watching porn since the age of 12 almost every day. If I had to describe myself, I would say that Im heterosexual and heteroromantic as I have had only crushes on girls and wanted to have sex with girls too. Also I dont see myself getting physically or romantically with a dude. Im sorry that this post got so messed up. Any thoughts?