so idk what to do anymore

I just turned 13 last month and got raped by a close family friend, this happened like 3 weeks ago and im late... idk what to do, my family doesnt believe me and i dont wanna face him ever again, i told my boyfriend what happened and he says he'll be here for me and that he'll go with me to report thst guy to the police. idk if i should go to the police since my family doesnt believe me......please help any advice would be great rn