Yeah! Next time he tries somethin' kick HIS ass! By the way here's a link for some self-defence techniques that are great against people bigger and stronger than you. I know a video is not as good as actual lessons, but hey; it's a start right?
that's part 1 of 11, though the guy in the video is pretty nuts, I HAVE used a couple of this guy's moves at school when dumbasses tried to choke me out (I.e. full nelson). I hope everything turns out ok!