Replying to Fucked

ive een late to school like 4 times this past week and i decided to spend some time jsut chillin before i head off to class. So today i do the same thing and sign into the attendence office like 20 minutes late. Fortunately, i missed a quiz. UNFORTUNATELY, MY FUCKING TEACHER SENT A NOTE HOEM TO MY PARENTS SAYNIG I NEED TO BE ON TIME MORE. they emailed her back saying i wasnt 20 min late when they dropped me off, more like 5. am i fucked or what? any advice?