maybe. yellow-green mucous is not a definitive sign of a bacterial infection in a two year old but it could be. this color change is usually caused by stagnation of the flow of mucous just the way a pond turns green if there is not a good in and out flow of water. two year olds do not blow their noses. if your child is ill or feverish. if he seems to be getting progressively worse. then yes seeing his medical provider would be a wise decision.
should i send my 2 year old to a doctor after 7 days of yellow green mucous nasal discharge? . he started with mild 38 degree fever for 3 days clear mucous on day 1 and 2. mucous started to become yellow/green with bad chesty cough that sounds phlegmy.