Could use a little advice please feeling so low

I need too know that I'm not insane, really. I am 16 and for the past two weeks, this has been completely ruining my health and happiness. I only recently came out as a lesbian like 3 months ago after a lot of confusion about my attraction since I used to think I liked men. At first, I felt so sure that I liked women, but lately, I've been having these unwanted thoughts about the possibility of liking men. I never used to feel this way, but now, every time I look at a man, my brain obsessively fixates on it. It forces me to imagine kissing him, loving him, things I don’t want, and then tries to convince me that I do. It’s painful. The thought of this fills me with fear and anxiety, leading to panic attacks and breakdowns. I don’t want these thoughts. I hate them with every fiber of my being, but I’m terrified that one day I’ll act on them and somehow like it. I used to think I liked men, but back then, I was in a very unhealthy space in a time of escapism and something deeply parasocial. I’ve only ever liked the attention and validation a man could give me, but these experiences are somehow treated as further proof that I’m "bisexual." I’ve never been in a real relationship with anyone, which makes my brain constantly challenge me—telling me, “You don’t even know what love feels like.” It won’t shut up. It keeps obsessively trying to make me prove that I’m a lesbian, testing my reactions and questioning my certainty. Is this normal?

First I want to start off with, as a kid, my brother touched me inappropriately, I watched him do the same with my cousin, than later on I did the same to my cousin. I feel great shame for it and I have yet to forgive myself. Now, since than 10 years later, I have always loved women, fantasized about women, constantly prayed to have one and do things to be with one 1 day. I struggled with porn a lot as a kid because I was shown it at such a young age. I remember first watching lesbian porn, than moving to guy and girl, than countdowns, etc. I was so hooked that it took an identity crisis to end this porn addiction. (I have only been sober for 3 weeks.) Now I only mention this because I think my porn addiction somewhat ruined me, same way as what I did in the past did. A year ago, I started to talk to a childhood crush I had, and things felt so great. We started to get along but I knew all I wanted to do was have sex and move on as wrong as that is. I ended up falling in love with her and asked her to be my girl. 9 months in, we were having constant arguments and she had this problem where she couldn’t give me a break. We were with each other 24/7 and it felt like dealing with a sister at some point. I remember talking to my friends and asking them what would they do and they always advised me to leave but I was not willing to because I knew I loved her and the way I was feeling was temporary and couples argue. Couple weeks in, I started to have these thoughts that we weren’t going to work out and that I no longer found her attractive. I kinda ignored them because it simply wasn’t true, I still found her attractive and would get hard ons for her yet, I still had this mindset that, “Oh, there’s other hotter girls” and, “Your ex looked so much better.” and I couldn’t stop these thoughts. One day I randomly woke up and remembered what I did as a kid, my whole world felt like it flipped. The thoughts were now, “what if you don’t like her because you’re secretly gay?”. I first laughed at the thought because of how ridiculous it sounded, but than it just kept going. Two weeks from a cycle of unwanted thoughts (1st stage of my ocd), I finally got over the thought with simple toughness and determination, I did lots of research on what was going on with me and went with the, “thoughts are just thoughts” method. I was doing well until we watch a netflix documentary “American Murder: Gabby Petito” and all of a sudden my mind began to think, “What if I’m secretly a psychopath and want to kill my gf?”. For about a week straight, It’s all I was able to think about. It scared me so much and I didn’t know what to do. I started to get urges to KILL my gf. I didn’t know what to do so I left the room and crawled up in a ball, crying to god asking for help.These thoughts went away but were quickly replaced by, “You want to kill your gf because you’re just gay”. This sent me into such great panic, I couldn’t eat for days and couldn’t feel anything but anxiety. Days went by and I finally went to a doctor, at first I started to feel better as If I was getting help and things were going to be okay. The thoughts went away again as I began to start doing more things and get out of my room (head). I felt like I was back again, I was able to love my gf, I started to go to church, I felt that god was real and than boom. Here I am again and this time things have gotten really bad. I can’t stop “checking”. As soon as I wake up I check if my gf is “good” enough for me. I check my past and see if I have ever done anything that show signs of being gay. I check out other girls and guys to see whether or not I like one or the other. Even when I accepted the possibility that maybe I am just gay, my mind will fight me and tell me that I’m more than just gay. Truth is, I don’t know anymore. I’ve always loved girls and my gf. I don’t know if this is OCD anymore but I wish for my old life again. I’ve always been so proud of my sexuality and loved everything about it. I never been homophobic but gay stuff does make me uncomfortable. Each day feels like I lost another part of me. I feel like I can’t live like this anymore. I lost all my belief in god, my morals and value feel so weak, and my life is no longer a fun enjoyable thing to look forward to. I need help.

I’ve been dealing with SOOCD for over a year now, and I have been having a very hard day today. I feel like I just need someone to talk too, my whole life I’ve always had girl crushes and always wanted to be romantic with women . Ever since I posted this picture on instagram and one person said I looked “zesty” in it , which is when I started obsessing about being gay . I feel like I put so much meaning to these thoughts where now I’m always checking how I feeling around men. I had a really bad porn addiction for a long time and bad anxiety which fucked up my sex drive. I feel like I doubt if I’m attracted to women when I know I am , but the doubt is so overbearing where I start to believe it . I never was interested in men sexually, and my ocd makes me feel like I like the thoughts even though I feel no pleasure out of it. I feel like I lost who I am as a person . It feels like I don’t even know what my sexuality is and it’s really upsetting to me . I meant this girl the other day and she is the most beautiful woman I’ve ever met and I just feel like ocd is getting in the way😭😭😭 please any advice or comments