i have a suggestion that many think is a bit crazy. have you heard about Elimination Communication [EC]? it's when you communicate with your baby to help them use the bathroom to relieve themselves rather than using a diaper. babies are born with innate desire to not soil themselves and totally have control over their bathroom muscles. in our society we 'diaper train' our babies by teaching them to use, in a sense, their pants to relieve themselves. it's kinda gross when you think about it, who wants to soil themselves? there are several books and websites about this (it's also called the diaper free baby). many mother who write testimonials report that after beginning EC, their colicky baby no longer had stomach problems. perhaps your baby is getting so backed up because he doesn't want to soil himself. i know it sounds absurd at first, but it truly works. we started EC'ing our son at 5 weeks and he know takes most poops on the toilet and often does not wet his diaper all day at 1 year old. it's amazing and well worth the 'extra work.' the 'extra work' now will really pay off when i'm not diapering and potty training a 3 year old! good luck!