Am I not straight or is this hocd?

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?

Like I can’t think straight. This is making me doubt everything I’ve thought about myself and even makes me feel like I like the thoughts when I know I don’t. Like I would be less anxious at a time while I still have the thoughts and my mind would go “oh so you like it you must be gay” or the other one where I’m not anxious and I think of my attraction for girls that I’ve had my whole life and my mind goes “see now you’re not into them you’re gay” like it’s so stupid but so effective. I clearly remember being into girls my whole life but my mind is making me believe that all these attractions and feelings for women were all fake or “a thing of the past”. But I can still get aroused by women but I have this weird anxiety going on which brings these sensations/feelings and it’s so weird. Today I’ve spent my whole day thinking about it like I’ve been doing for 5 months now. I know that this aint normal but my mind just won’t let me live in peace. I never cared about my sexuality cuz I simply liked women my whole life but now my sexuality is a fundamental philosophy. I hate this.

I feel like I'm lying to myself, like I just don't accept that I'm gay, I don't want to be gay, I don't want to feel any kind of attraction anymore, I want to go to a psychologist to find out if I really have hocd or if it's just an excuse, because it feels like I really am gay, but nothing was authentic, it all started with thoughts that made me panic extremely hard and I felt like crying and I had delusions, I don't understand why this is happening to me, I didn't like any boys before the thoughts appeared, but exactly one day after they appeared, all the boys were attractive, of all ages, I want to recover :( I'm only 17 years old, for about 2 months I've been having thoughts, I don't know what to do, I can't go to a psychologist, I need help :(