It is important to monitor your baby's bowel movements when they are exclusively breastfed. If your baby has not had a bowel movement for over 48 hours, it may be a cause for concern. However, as long as your baby is urinating regularly, drinking well, gaining weight, and not showing any signs of discomfort, there may not be a need to worry immediately. It is always a good idea to follow the recommended techniques like massaging the baby's tummy and doing bicycle legs to help stimulate bowel movements.