question: My 3yr old son has been throwing up almost every night. Then going diarrhea. when it happens he only throws up ones then acts totally normal. During the day he acts normal as well. This has been going on the last 6 days or so. His appetite is not very good and we ve been giving him a bland diet mainly just crackers, pretzels and toast. We ve also worked hard at keeping him hydrated. We went to his Dr and he said he thinks it s he s still working through a virus. Just wondering how long is too long for these symptoms to be going on.