My 6 year old has vomited only at night no fever nothing. just last few days projectile vomit and one night diarrhea. feels great during the day. ?

Diet: You could feed only bland foods, like in the brat diet, and have him drink only clear-see through- liquids. The milder food will stay down better. Keep this up for 2-3 days and then slowly advance the diet by adding in foods that are greasy or spicy. Wait to add in dairy for 2-3 days. That should help. If not, then see the doctor for help.