All babies are different. Mothers who have had experience breastfeeding may say that their first baby breastfed without any difficulty, their second baby had more difficulty learning to breastfeed, and a third baby, again, breastfed easily.
Some babies seem to be born knowing exactly what to do and how to nurse at the breast.
Others need to learn this. Breastfeeding is a learned skill for both mothers and babies. New mothers need to realize it may take a week or longer before they and their new baby are breastfeeding well. Mothers need to try to relax and continue to work with their baby during this time.