implantation bleeding? am i pregnant ?

okay so i just want to let you know that this might contain some touchy subjects, but anyways here i go- so about three weeks ago i was raped. i am 13 years old. i am really scared i might be pregnant. i got what i think is my period on may 6th but it was kinda light and lasted only about one day. i did some research and i think it miggt have been implantation bleeding. I think he pulled out but it was really traumatic so i’m not sure if it was successful, but i don’t think it was bc there was cum around my vagina after words. please help me figure it out. and don’t comment about me talking to my mom about it bc that’s not really an option.