My baby didn’t eat anything from last 3 days except breast milk... he is 14 months old now....what should I do.

A. Is There any problem that you are really is facing you’ll have to check that because when a child is having some problem your child is not comfortable with something which is when a child does not eat and it is at this age the most frequent reason with you I have seen with kids is to have their teeth so kindly check that