question: My 5 month old son has been projectile vomiting for over 30 hours now after every time he eats. We have given him pedialyte as we were told to do by the ER Dr yesterday evening when I took him to the children's hospital. He is even puking that up. He just puked up a yellowish green mucus looking substance, and the past 5 times he has vomited he has gone limp. He seems to have less muscle control to hold his body upright. What should I do?