my son is 15 days old he has done vomiting last evening vomit is looks white thick sticky milk, he has vomit large amount of milk what was the reason behind it? it's normal?

A. Could be associated with digestion related issues because in the age where your child is in this kind of situation is common to be seen stomach reflux and indigestion are common in this so need not worry about it if you want you can always consult the doctor