The important thing is for you to not allow this to set you back! Remember to stay centered and to only allow RATIONAL thought to enter in. How do you prevent a stomach bug? You wash your hands before touching your mouth. That's IT! Your stepfather most likely won't even want to eat dinner if he is sick with a virus, but if he does, who sticks their hands into the main course? None! He's not going to do that. No adult does. He'll recover, you'll be fine and this will soon be a distant memory. A simple virus has NOT stopped you from being care free, your old thought patterns have. It's a big fat nothing. A few hour bug that's most likely over with at this point. Do what you can to help your stepdad, clean up if anything needs it and move on. That's what 'normal' people do and they don't usually get sick!