My son has been throwing up for 27 hours. He went 12 hours of that without throwing up. We thought he was over the bug . It started back! The vomit has been yellow looking but this last time it was brownish red. He had diarrhea with the vomiting for 8 hours. He hasn t eaten during this time frame either but we have managed to get some fluids in him (ginger ale) but he refused to drink anything for the past 9 hours. His fever (checked by his ear) was 99.9 13 hrs ago and I gave him tylenol. There have been other students in his Kindergarten (he s 6yrs old) that have been throwing up. If he throws up blood, what do I do? At this point, should I take him to the emergency room. He says his stomach hurts but it doesn t seem to have him bending over in pain. (appendix?) Please help us!!!