sick baby help!! my son goes to a day care provided by my high school, and all babies except one…

sick baby help!! my son goes to a day care provided by my high school, and all babies except one were absent Friday. we got sent home because Hayden has been having diarrhea. well now he has a cough, puking, diarrhea and he feels pretty warm. he just won't stop crying to the point where he's lost almost all his voice. I've put Vicks on his feet and covered them with socks, had him sit in the bathroom with a steamy shower running, and ive given him some Tylenol. NOTHING'S HELPED. please give me advice on what to do!