My 2 year old has so much mucus he can't lay down or he vomits it up. we have seen a doc who said it was viral. how can i help him?

Cool mist humidifier: In the average healthy child with a cold, the best treatment is to use a cool mist humidifier and encouraging liquids to thin the mucus. You can run a warm shower & sit with your child in the bathroom (outside of the shower). Having said all this, if your child has a ventriculoseptal defect, you need to keep a close eye on him and followup with your doctor if he is worsening or not improving.