Would love to help someone solve their mind related issues.

I am so tired of complete #######4. I don't see the point of anything anymore.

Is it abonormal that whenever I gain interest in a certain show or game that all of a sudden I drop literally all my other interests and focus mainly on one character in that series/game. It gets so bad that I'll actually imagine myself being in a relationship with them and also adopt most of not all of their traits and pretend I've always acted like that when in reality I was different before hand. But then again that could've been another character. I've been doing this for near 10 years so I don't even know who I am anymore. It's frustrating and I'm honestly concerned as it's nearly ended friendships in the past. In order to stop it, I've tryed asking myself am I doing this as me or as the character. This has proved unsuccessful as it just makes me paranoid that I'm being a character when I do something the same way I'd imagine the character doing something. It could be the most mundane task ever and I'll still be paranoid that I'm not me but someone else.

OK. so first of all my name is Phil and i am 17 years old and a few months ago i have had the fear of becoming gay. I am a very anxious person and have always worried about things ever since i was about 5. for example, i would worry that i would go deaf, blind, have a heart condition etc. Every time i get over a fear and stop worrying a new worry comes to my mind maybe a few weeks later. my longest fear was that i had a retinal detachment because i saw floaters in my vision which were completely normal. i went to the doctors 3 times in 2 years. they scanned my eyes and did the best eye exam i ever experienced but afterwards i would always convince myself that there was still something wrong. i would always check and squint to see these things floating in my vision to the point i would feel sick and have panic attacks. when i was 11, i also felt a pain in my eye 24/7 and it got me really worried. but 1 month later when i went to the doctors and they said everything was OK, i never felt it again. it is clear to me that this was pain that i was causing by thinking!
now to the HOCD. A few months ago, i had this dream that i was watching 2 men kissing eachother. i felt no pleasure in the dream whatsoever. i then woke up sweating and panicking, disgusted by this dream. this was always in the back of my mind for 1 month until i really started to think about it. i was forcing these gay thoughts on myself to see if i would get aroused. it didnt at first but i was thinking about not getting an erection so bad that it increased in size a tiny bit and i had a panic attack. it didnt feel like an erection i would get though that i would get when i think of something nice like girls. Before all this, i had never had a gay thought and i actually used to think about gay stuff to make my erection go down when i had an unwanted one when i was in school last year:) I have always loved girls ever since i can remember and and i know deep down that I am not gay and this is just a worry like my other OCD problems in the past. I always look for attention from girls when i am shopping for example. i am apparently a cute/attractive guy and i love it when i know girls are checking me out. today i saw this girl and i would walk around her on purpose so she would see me because i knew she was checking me out and i just love that tingly feeling. But then i thought "what if i am just imagining this attraction" and gay images came into my head and i started to worry again. I have never checked out guys in my life until this HOCD kicked in. As soon as i see a good looking man, i just look and fear that i am attracted to him which i know im not but i just wait for ages for some feeling to make myslef worry even more. I cant control it.
However, when i am totally relaxed and haven't thought about gay things all day and then think about it, it doesnt do anything to me. i dont worry and i dont feel disgusted. but the more i think and think i find it hard to breathe and get this weird feeling. yesterday when i was really relaxed, i had an erection and went on gay porn to check if this is just my mind and my erection went down so fast.
This HOCD was much worse than it is now but it keeps coming and going and i want it to stop because it is really ridiculous but i cant control it whatsoever and it is ruining my life. it is as if i am like possessed and there is another person inside me making me worry.
please help me. i dont know how to stop it. i have had so many OCD problems in the past but this is really the worst one.
thanks for reading!

Only read this post if you didn’t read my other one. This is a shorter version of it. Help me, please! I at least need some kind of comfort or advice, or someone to understand my problem! Ever since I was a baby, I’ve had these weird delusional obsessions. I only talked to myself in my imagination and never really had any contact with the outside world. I called it “non-exposure” and I never exposed anything. It always had to do with cartoons. Just cartoon characters- I was so obsessed with them, and they filled my brain for my entire life- I am not kidding. Every day, 24/7, I would try and picture them in my mind, either trying to picture these kids dressed up as their favorite ones, or just thinking about my favorite ones dating other characters. I was not only obsessed with them, but I was attracted to a lot of them as well. This went on from elementary school to middle school, to high school. I’m 16 years old in my junior year now. I couldn’t stop. It was the only thing that made me happy. I never told anyone about it because I never thought it would be a problem until now- I always thought of it as just a hobby that I liked to do. But now I know it was a waste of time. Now that I’m a junior, I’m supposed to be focusing on college and even more work. But because I lived inside my imagination for such a long time, I suffer consequences now. I’m not able to do the things I used to do. I can’t read, I can’t even focus on real life without zoning out. I don’t know what to do, and I can’t tell anybody- not my mom because she would be devastated, and not anyone else because they would just think I’m weird, and they would be upset, too. I can’t picture anything else in my mind besides these cartoons, and what I see on TV. I’ll never know what it’s like to be an actual person, living a normal human life. I can’t stare straight forward without zoning out, getting dizzy, or getting tired. I hate what I did to my life. I think school lessons are interesting, but they’re hard for me now! I try to focus on school but find it hard to do my work. I could have been a great person. But now I have no skills, and I can’t do anything. I don’t think I can function in this world. I don't think I'll be able to graduate high school, or function in college. I am not an attention whore, but I really want somebody to comment on this soon, because I am lonely and need at least some kind of company...