Someone threatening to hurt you if you don't have sex with them is coercion, and even though you "agreed", you were still pressured, which fits the definition of rape. In some states, I believe having sex with a 13 year old at all (even if they completely agree) is statutory rape. Many people who have these experiences don't choose not to call what happened rape, and that's their right if it helps them heal. You should definitely seek out the help of a therapist, because you had a horrible experience, and it's still bothering you. You have nothing to be ashamed of, but getting to the point where you really feel that will take a lot of work, and people on the internet can only point you in the right direction, not fix the problem.
I am so sorry this happened to you, and I hope you get the help you need to finally get past this experience.
Hi Cherry, I think your brave to come here and tell your story, but at the end of the day it was the guys who were the sl*ts and not you, for me you have hothing to worry about, the problem is that you keep diving into the dark corners of your brain, and this keeps popping out of it, as remar has said you could try theropy, and I think this could be your way out.
Good Luck
You have nothing to be ashamed of. The guys who did this to you should be so ashamed.
I recommend therapy to help you deal with this. It was a very traumatic thing that happened to you.