DS (7.5mo) has had a cold this month that over the past week has turned into a very mucousy cough. He's been checked over by the doctor a couple of times and it's not an infection; the mucous is clear. The problem is that he's coughing unril he vomits after many of his feeds, both milk and solid. I'm worried he's not taking in any nutrients or that he might get dehydrated. His doctor said not to worry, just that it will pass. Can't help being concerned though. Any thoughts or tips?