Depressed

I have this fear that I might turn out to be a pedophile, I remember when I qas around 12-13(I'm 15 know) I had Pedophilic thoughts about this little kids at the park, I didnt know it was bad, but know everytimeI see a child I get sad and feel that I might hurt them, whoch sucks because I want to have children but fear that I will do something bad, The more I think about it the more thoughts I have, but I just can't stop, I really don't want to be a pedophile and Im really afraid.