My little sister woke up in the middle of the night throwing up and has thrown up aboit 7 times in the past hour and a half. Also very bad diarrhea and my parents are out of town. I have my older sister here too but is there any way i can help her? Get her to feel better and stop throwing up? Im also not feeling well, like ill be in her condition soon. She has water and i gave her ice chips because when i get scarlet fever i like those. I want her to feel better and myself as well so is there any thing i can do? Ive looked at a few websites and they say if this continues for a little while longer to take her to the er?