How can I stop worrying? it's ruining my life?

a year ago i was having an enternet chat with a stranger with the web cam on and i have unzipped my jacket and showed off the middle part of my bra "and not all of it " for 5 seconds and immeadiatly the guy told me that he had taped me and threatened me that he id going to put it on youtube if i dont saticefy him sexually, so i offered to send him money or to pay for a hooker to saticefy him instead of me if he just showes me the pictures he have of me and not deleting them just showing me what he's got then he refued and he told me he is lying and that he has nothing and that he was masturbating :( since a year i have been searching youtube and google daily i have seen hundred thousands of images and couldnt find mine yet. my doctor says that i have developed OCD " obssesive compulsive disorder" which is ruining my life and my children's life as well . should i keep hunting the images or just think that the pictures of me didnt exist in the first place, please help me get over this destructive thoughts