Pacify or not!
I know a pacifier can be a source of comfort for a crying or colicky baby.
It satisfies the suck reflex. Protection against SIDS (Sudden Infant Death Syndrome), Use the pacifier when putting baby down to sleep, but don't put it back in baby's mouth once they are already asleep.
I was against using the pacifier at first because I breastfeed, I waited til just recently when she was 3 months, It's been a big help on long car rides and getting baby to sleep through the night.