For me it started later (16-ish maybe?) and still continues. It led me to doubt my orientation, but I don’t know that it was SOOCD per se. A lot of the time I am grossed out by the images. The teacher thing hit home though, because I have fears that teachers will rape me. Even now, I get uneasy about being alone with professors, even though I am bigger than all of them.
I’m sorry you have to deal with that. Mine still occurs but it’s not nearly as bad as it was. I hope you find peace.