man, that sucks. im glad you are ok. just keep those scrapes really clean. if you go to the ER they will literally take a scrub pad and scrub that top layer of grime and dead tissue off-its really painful (i have done it before to a patient and felt really really bad for him). use peroxide to clean it really well, then get some antibacterial ointment to lightly put on them to keep infection out (neosporin works good).