my 14 yr old son has been sick for like 3 weeks now. his symptoms are coughing, wheezing, headache, joint aches, muscle weakness, no fever, Vomiting and diarrhea. i have taken him to urgent care about 2 weeks ago they said it was a virus and they couldn t do anything but keep hydrated, so the next couple of days he was still feeling the same so i took him to his pediatrician. she also said the same thing it is a virus and they couldn t do anything. i had to let it run its course. Now he feels worse with the same symptoms and no fever. what could this be??? should i take him to the emergency room???