my baby is 3 months and two days old. her growth scale is also good and i am feeding my milk for every 2hrs. she is having sufficient milk. In the afternoon she sleeps well. but at night she is crying suddenly with fear and not sleeping till morning 6 or 5 am. We do not understand why she is crying in the night Times with fear. Her crying at night time with fear makes me worried. please let me know why she is doing like that