Baby painful pooping :(

Erin
Hey fellow Mom friends! Wondering if im the only one experiencing this: no matter what I seem to eat, at least once a day my princess will writhe around and scream and kick and flail her arms trying to have a bowel movement. Shes exclusively breastfed. She can usually sleep for about 6 hours at night but wakes up doing this. Doc says its fine and all her poops r normal but its horrible watching her suffer! Is anyone else experiencing this? Love Concerned 1st Time Mommy