My 4 1/2 month old used to go once every 7 days, suddenly it's been past 2 weeks. I've never had such a long time in between. When she was a newborn a few times I used rectal stimulation(I really don't care to try this again) My ped recommended not letting her go longer than 12 days, and using a baby laxative at that time. How long has your babies gone in between poo diapers? Do any of you use infant laxatives?