Girls, hello ?? We've almost two weeks, it happens that the baby spits…

Girls, hello ?? We've almost two weeks, it happens that the baby spits up milk after feeding, and sometimes with air. After spitting up air, he doesn't spit up milk. And if he doesn't spit up air, he starts to spit out milk. The pediatrician says that it's normal, but I get panic when he spits out everything through his nose and mouth. Is this dangerous?