If you are pregnant, any baby-related items that appear in dreamland may be reflections of your current preoccupation with all things baby.
If you are not pregnant or thinking about starting a family, baby-related items in dreams link in with the birth theme of new beginnings and possibilities. They can also represent your desire to be supported, loved and protected.
If you dream of a baby sitter or nanny, this may be a warning or a comment on your own security and ability to handle things by yourself.... The Element Encyclopedia
As a symbol of childhood, a pacifier is evidence of immaturity on the dreamer’s part: he or she wants to return to the worry-free years, thus, avoid facing the trials of life.... The Big Dictionary of Dreams
A pacifier is a substitute for the nipple used to calm a baby by tricking it into thinking it is receiving milk. As a symbol, it represents the impulse to sedate some irritated aspect of self. Consider who was using the pacifier in your dream and that will give you a clue as to what part of your psyche is screaming at you.
If you are struggling to find a pacifier or if it is compromised in some way, you may be dreaming about stress that needs to be soothed. Part of the meaning in this symbol connects to the actual ineffectual nature of a pacifier; it offers the temporary illusion that there is something present that is actually not. In this way, a pacifier in a dream could signal that you are attempting to create something without the authentic power to back up your intentions.
If you are the parent of a baby that is of pacifier age, this dream could be more literal.... Complete Dictionary of Dreams