My 8 year old son has had a wet cough for a month now. He is now complaining of a headache, stomach ache, sore throat, all over general body pains and is having difficulty sleeping because he continues to cough, waking himself up and has a sore throat to go with it. I took him to the ER where they decided it was a sinus infection and gave him anitbotics which he has just started today, however I am concerned there may be something that is being over looked since they did nothing but listen to his chest and take his temperature, which was slightly above normal. Not sure if I should let it go and cross my fingers, or take him back to the ER.