is pacifier related to vomiting on newborn?

No, it isn't. Sucking, whether on a pacifier, bottle or breast, is completely natural and instinctive in a baby. If sucking caused vomiting then babies wouldn't grow.

Chances are your baby is doing the normal spitting up that most babies do. In some cases, it seems like way too much spit up to come out of such a small person, but it is completely normal, especially in bottle fed babies. Formula does not stay in a babies stomach as well as breast milk.

You've most likely got nothing to worry about with your daughter's spitting up. Let her have the pacifier. It won't hurt her at all, it will only soothe her.

It's possible. My son never liked the pacifier. Not even the small ones made for newborns. He has a sensitive gag reflex and I noticed when I put it in his mouth when he was very young he would react.

It could also just be coincidence and altogether unrelated to the pacifier. I would speak to your child's doctor about the vomiting(vomiting is projectile unlike spit up, and spit up is very common in newborns)

It shouldnt cause vomiting. Is she really vomiting or just spitting up about a tablespoon? Do you keep her upright after feedings? If she is truly vomiting I would call your pediatrician.