If baby is on exclusive BF and gaining weight then nothing to worry...
Usually infants on only BF may passes stool for 15 to 20 times, you should give neopeptiine digestive drops....
Night time crying and not sleeping will be reduced in next few weeks so don't worry...
Next Steps
give colicaid drops for night cries...
Health Tips
apply coconut oil around anus to prevent rashes...
consult online if requires...