I only take DS to the doctor if I feel medication needs to be prescribed whether it be antibiotics for an infection or pred for croup. He is 3.5 and had ABs twice. Once for tonsillitis and once for a ear infection. He has had bad croup twice and needed pred. If he has what I deem to be a cold (cough, runny nose etc) we don't go. There is nothing that can be given. I have found a Doctor who I trust but it has taken some time. They are not an easy species to find!