Hello my 4 year has a dry cough fever on and off for the last 4 days, diarrhea, runny nose and some nose bleed, and my 23 month old has fever on and off , runny nose, cough and a bit of yellow discharge on her eyes. I have been giving them Tylenol and the fever breaks for a couple of hours but comes back their fever is between 37.5 to 38.8 Should I take them to the hospital?