We went to the pool 2 days ago and my 3 1/2 year old has come in this morning with a temperature and a chesty cough.  He has no other symptoms and am worried it is caused by the pool water? He coughed a few times yesterday (no temp) but nothing too bad, today his cough is much worse.
HI...nothing to worry about. Seem like he has caught a viral pharyngitis. Cough and cold are viral 95% of the times in child Chat Doctor.  For cold, you can use anti-allergics like cetirizine/ Promethazine and for nose block, saline nasal decongestants will do. For fever - Paracetamol can be given in the dose of 15 mg/kg/dose (max ceiling dose 500 mg) every 4-6th hourly, that too only if fever is more than 100F. I suggest not using combination medicines for fever, especially with Paracetamol. For cold, you can use Cetirizine at 0.25 mg/kg/dose every 12 hourly for 3 days. For nasal block, plain saline nasal