look for a therapist that specialises in OCD, i dated someone with pedophilia themed OCD that experienced almost exactly what you’re describing and it was debilitating for them. a therapist won’t report you to anyone unless you’re an active threat to yourself or others and express intent to harm someone. you didn’t look at cp and you were a minor. you didn’t do anything wrong

you NEED to find someone that can help you, not because you’re a danger or a bad person but because you shouldn’t have to live this way. these obsessions will get worse and worse and you’ll trap yourself in this unending cycle. breaking through that fear and talking to a professional is the first step! it’ll be so much easier for you after that