If you can give yourself an injection, you should be able to throw your clothes in the washer with some detergent.
You're screwed anyway now even if you did learn how to do your own laundry 'cause your mom is gonna be creaming in her pants to see what else shakes out of your laundry. Tell her you had a big ol' nasty puss filled bump on your ass and it busted when you were doing seated calf raises. This shit is pretty funny. I'd use a band-aid next time.