S.T.
Sometimes babies can go 5-10 days with out pooping. I had this problem with my girl when she was about 3-4 months old. She didn't poop for 12 days! She was really constipated and she was straining and bled when she tried so hard to push it out. My Dr. ordered me to give her Karo Syrup, the Dark Karo Syrup. 1 TBSP in 2 ounces of Water room temp. or 2 TBSP in 4 ounces of water room temp. If that doesn't work you can give her diluted prune juice, I wouldn't do apple juice though, sometimes apples constipate even more. Just do half and half with the prune juice and water. Ex. 2 ounces of prune juice diluted with 2 ounces of water. Once I started feeding her prunes as her first food, this all stopped...now she poops like 4 times a day! :) Good Luck!
S.: Mother of my daughter Riley 7 months old.