What do I do ?

There's this guy I've been friends with. He graduated last year , he's 19 . He came to my house one day and started making out with me , I told him to get off and he wouldn't let me get up and I couldn't push him off . He kept pushing me down , I finally got away but he told me it was gonna happen . What do I do ? I've blocked him on everything . I'm 15 btw . I'm scared