Shanu it's okay if baby is on exclusively Breastfeeding. Please increase your breastfeeding session. Like feed every 2 hours once till baby is relieved from this condition. Breastmilk is best solution for constipation. Also you drink more water. 2 to 3 lt per day. Keep yourself hydrated.

R u breastfeeding mom??If yes then it is ok if baby for 4 to 5 days n even can go for a week