My DS has just gone nearly a week before having a poo. Having saved it all up for today for so long, we had 2 major explosions, neither of which any nappy could have contained. Is this something to worry about? I'm concerned that it might have exacerbated his "colic" (strictly not colic, as it hits at various times in the day or night, but always after or during feeds, and used to last for 3 hours). He's had the digestive pains since he was 3 weeks old, but the constipation has really only happened from about 7 weeks.