My 19 year old son came home from school today to recover from a cold before finals. He had some soup for dinner and has experienced violent vomiting and diarrhea. This is his third day with these symptoms. He has a slight fever - 100.00 - and is also totally stuffed in his nose and chest. The school doctor told him he had an upper respitory infection. How can I make him more comfortable? Does he need to go to a med-clinic tomorrow?