If you dreamed that your child vomited blood: You need to be careful about things like forgetfulness, bumping around or breaking something, you may need to make an effort to persuade people who disagree with your ideas or argue the opposite of everything said. To see that your child vomits blood in your dream indicates that you will say bad words to your child, have a troubled period, increase in troubles and get upset, and you should not make a hasty decision in order not to regret it.