H.M.
Ok, this might be totally coincidental, but it's worked for us both times my baby has been "backed up." I have a 7-month old who is breastfed and as soon as we started her on solid foods, she started having trouble "getting it out." So, I made some bran muffins and put some Benefiber in the recipe and I ate two or three of them a day. She seems to have responded to the difference when I'm breastfeeding her, because her stools have been softer. Does fiber pass through breastmilk? I have no idea, but, like I said, it seems to have worked for us, so you might give it a try along with the prune or apple juice. Good luck! :)