I need help with hocd it's destroying me

Ok so last year July i was watching tv and ibakso this guy on tv and insaid to myself my sister would most likely consider him a pretty boy and then I started questioning myself I started saying this means i find him attractive then and thats when it all started just a cycle of thoughts of being gay I keep asking myself am I gay every second if the day I would think do I line guys no bit I've always like girls my whole life I find them attractive I always say females are suck wonderful creatures but the hocd would tell me your just lying to yourself your gay it went on for the whe summer that was when it was at it's peak then school started I finally decided to check on the internet of I was turning gay I was to scared to check because I thought it would say I am and I came across a few articles saying that what hocd was and the symptoms and I fit then symptoms but still no matter what I can't stop thinking that I am gay I also tried watching gay porn for reasure it didn't go to well because it gave no a false sense of arousal but I still knew i didn't find guys sexual attractive but then I'll her sexual thought bout makes they were and still are completely disagreeing I even one night came to the conclusion I was really gay but that didn't feel right so I knew inwasnt gay so I knew I wasnt liked 3 different girls throughout the school year I'm 17 by the way I still also remember the name of every girl I liked and which grade and Order even though I haven't seen some of them in 7 years I have also never had a gf i am too shy to talk to them I'm also trying to get over that... But recently I feel like my hocd has calmed down it doesn't really cause much anxiety anymore but thats the problem now because now I'm saying if I don't get anxiety does that I mean I finally turned gay I'm now starting to think if I'm gay what would my family think and a whole new cycle is starting to start I plan on going to therapy once I graduate high school... But is this part of the normal cycle because my anxiety has towards the homo thought have really calmed down and now I'm wondering why it has calmed I mean I have been using techniques from online on how to help get over hocd I don't If it's the techniques or maybe I am gay but I don't feel gay now I fear tht I'll like a boy when school starts I thought the same thing last year but i didn't I ended up liking 3 girls it's when I'm by myself when it's at it's worse sorry for the long story but I just can't take it anymore