constipation

Faith

my baby girl is 8 months old and has been ok n solids for about 2 months. sje primarily eats avacado, mango, apple, prunes, pear, bannana, sweet potato, squash, and carrots. sometimes she eats oatmeal (no rice). she is on similac pure bliss, and breast milk. her poops for the past few days have been big and hard. she has been able to pass everytime but she cries in pain and it breaks mt heart! i am a first time mom and im not sure what to do( she also gets chiro adjustments every month, and she will be getting goats milk in a few weeks to suppliment, she cannot have rice as it adgitates her stomach). is there anything else i can give her to help her? (side note we dont feed added sugar, color or additives and all of her food is organic)