In this period some times baby passing stool 8 to 10 times in day(Small quantity),or some time they not passing stool 3 to 5 days also. And this is normal
You should get her evaluated once for her complaint to get her examined physically by a pediatrician
There are many causes of constipation(passing hard stool) in infants like fault feeding style, thyroid
,,Hirschsprungs disease etc
"I Wish your baby will Recover Soon "
Regards Dr. Sagar Mhatre