I am really sorry to hear that this happened to you
. I have been raped before by someone more than twice my age and it was one of the worst experiences of my entire life and although your situation wasn't entirely the same it can be just as damaging. I understand how you must feel it it must have been a terrible for you. Nobody should ever have to go through something like this and if it is bothering you and making you feel used and dirty as you said then I think it would be a good idea for you to talk to someone about it maybe a friend or a councellor? I wish you the best of luck with everything and feel free to
pm me anytime if you ever need to talk.