I’m getting intrusive thoughts about every dude I see in a movie and in real life and this feeling in my chest... I don’t know what to do...

Today has been really hard I feel like I can’t even breathe I feel like a pedo for real :( whenever i think during my alone time i try and coexist with it? but when i decided to think and think i panic and panic more and more i start feel more guilty guys I can’t take this anymore bc when I kinda feel certain it fades aways i think logically i know i probably am ok :( but it’s so scary for me what if i did actually act on the thought and I didn’t realize? And now reflecting it ???

Why are things so real the first time they’re in my mind and then when I think about it later it’s easier for me to be like wtf?? I was watching a movie earlier and the young girl had developed more in the chest area than the last movie and I felt the desire to check her out so I did. Then later I let myself imagine her having sex and I liked it. But now looking back I’m like ew. The boys in the movie have also developed as the movie went on and I couldn’t help but think that in their real life they’ve probably woken up to boners and s*men and stuff. And looking back it’s just ugh. Idk if it’s sexual relevance but I genuinely let myself indulge in these thoughts and groinal responses and I remember thinking to myself I don’t want to be attracted to little kids and how do I stop myself (everyone has attractive qualities so in younger boys I see man like qualities). Idk I need help. I wouldn’t type this out if I truly believe I was messed up but I’m still scared

i think my intrusive thoughts are real. what do i do now man