How do u understand that formula is not for ur baby?

Huh ?

@fifismommy, if its not the right one.

Do you mean like a certain brand of formula

Well what kind of reaction is the baby having

@izzykkajs_momma, @fifismommy what is the symptoms if formula isn't agreeing with tummy?

Painful gas, spitting up a lot, fussiness, constipation.