My 17 year old son(5'11, 180lbs) has had a cough for 3 weeks, 1 course of a z-pack ( no difference afterwards). Last night felt nauseated, begin vomiting, body aches continues today. Has temp 101.9 gave 1000mg of Tylenol temp 100.3 goes right back up when it wears off. Only able to keep down small sips of water, couple of otter pops and nausea, looks flushed, sweaty. Should he go to ER or Urgent care?